0000081362-21-000004 | 10-K | XBRL Viewer

Print Document View Excel Document

Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2020	Jan. 31, 2021	Jun. 30, 2020
Document and Entity Information [Abstract]
Document Type	10-K
Document Period Focus	FY
Document Fiscal Year Focus	2020
Document period end date	Dec. 31, 2020
Current fiscal year end date	--12-31
Document Annual Report	true
Document Transition Report	false
Amendment flag	false
Entity File Number	001-12019
Entity registrant name	QUAKER CHEMICAL CORPORATION
Entity Incorporation State Country Code	PA
Entity Tax Identification Number	23-0993790
Entity central index key	0000081362
Entity Address Address Line	901 E. Hector Street
Entity Address City Or Town	Conshohocken
Entity Address State Or Province	PA
Entity Address Postal Zip Code	19428-2380
City Area Code	610
Local Phone Number	832-4000
Entity well known seasoned issuer	Yes
Entity voluntary filers	No
Entity current reporting status	Yes
Entity Interactive Data Current	Yes
Entity filer category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Security 12(b) Title	Common Stock, $1 par value
Trading Symbol	KWR
Entity common stock shares outstanding		17,853,700
Entity public float			$ 3,273,904,147
Security Exchange Name	NYSE
Documents Incorporated By Reference [Text Block]	Portions of the Registrant’s definitive Proxy Statement relating to the 2021 Annual Meeting of Shareholders are incorporated by reference into Part III.

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 1,417,677	$ 1,133,503	$ 867,520
Cost of goods sold	904,234	741,386	555,206
Gross profit	513,443	392,117	312,314
Selling, general and administrative expenses	380,752	283,828	207,872
Indefinite-lived intangible asset impairment	38,000	0	0
Restructuring and related charges	5,541	26,678	0
Combination, integration and acquisition-related expenses	29,790	35,477	16,661
Operating income	59,360	46,134	87,781
Other expense, net	(5,618)	(254)	(642)
Interest expense, net	(26,603)	(16,976)	(4,041)
Income before taxes and equity in net income of associated companies	27,139	28,904	83,098
Taxes on income before equity in net income of associated companies	(5,296)	2,084	25,050
Income before equity in net income of associated companies	32,435	26,820	58,048
Equity in net income of associated companies	7,352	5,064	1,763
Net income	39,787	31,884	59,811
Net income attributable to noncontrolling interest	129	262	338
Net income attributable to Quaker Chemical Corporation	$ 39,658	$ 31,622	$ 59,473
Per share data:
Net income attributable to Quaker Chemical Corporation common shareholders - basic	$ 2.23	$ 2.08	$ 4.46
Net income attributable to Quaker Chemical Corporation common shareholders - diluted	$ 2.22	$ 2.08	$ 4.45

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Comprehensive Income [Abstract]
Net income	$ 39,787	$ 31,884	$ 59,811
Currency translation adjustments	41,601	4,779	(17,519)
Defined Benefit Plans [Abstract]
Net gain (loss) arising during the period, other	8,827	(6,289)	1,119
Amortization of actuarial loss	2,308	2,458	2,507
Amortization of prior service gain	(69)	(151)	(84)
Current period change in fair value of derivatives	(3,278)	(320)	0
Unrealized gain (loss) on available-for-sale securities	2,091	2,093	(1,728)
Other comprehensive income (loss)	51,480	2,570	(15,705)
Comprehensive Income	91,267	34,454	44,106
Less: comprehensive income attributable to noncontrolling interest	(37)	(287)	(248)
Comprehensive income attributable to Quaker Chemical Corporation	$ 91,230	$ 34,167	$ 43,858

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 181,833	$ 123,524
Accounts receivable, net	372,974	375,982
Inventories, net	187,764	174,950
Prepaid expenses and other current assets	50,156	41,516
Total current assets	792,727	715,972
Property, plant and equipment, net	203,883	213,469
Right of use lease assets	38,507	42,905
Goodwill	631,212	607,205
Other intangible assets, net	1,081,358	1,121,765
Investments in associated companies	95,785	93,822
Deferred tax assets	16,566	14,745
Other non-current assets	31,796	40,433
Total assets	2,891,834	2,850,316
Current liabilities
Short-term borrowings and current portion of long-term debt	38,967	38,332
Accounts payable	191,821	164,101
Dividends payable	7,051	6,828
Accrued compensation	43,300	45,620
Accrued restructuring	8,248	18,043
Accrued pension and postretirement benefits	1,466	3,405
Other accrued liabilities	92,107	83,605
Total current liabilities	382,960	359,934
Long-term debt	849,068	882,437
Long-term lease liabilities	27,070	31,273
Deferred tax liabilities,net	192,763	211,094
Non-current accrued pension and post-retirment benefits	63,890	56,828
Other non-current liabilities	55,169	66,384
Total liabilities	1,570,920	1,607,950
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock, $1 par value; authorized 30,000,000 shares; issued and outstanding 2020 - 17,850,616 shares; 2019 - 17,735,162 shares	17,851	17,735
Capital in excess of par value	905,171	888,218
Retained earnings	423,940	412,979
Accumulated other comprehensive loss	(26,598)	(78,170)
Total Quaker shareholders' equity	1,320,364	1,240,762
Noncontrolling interest	550	1,604
Total equity	1,320,914	1,242,366
Total liabilities and equity	$ 2,891,834	$ 2,850,316

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Common Stock Par Value	$ 1	$ 1
Common Stock Shares Authorized	30,000,000	30,000,000
Common Stock Shares, Issued	17,850,616	17,735,162

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income	$ 39,787	$ 31,884	$ 59,811
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of debt issuance costs	4,749	1,979	70
Depreciation and amortization	83,246	44,895	19,714
Equity in undistributed earnings of associated companies, net of dividends	4,862	(2,115)	2,784
Acquisition-related fair value adjustments related to inventory	229	11,714	0
Deferred income taxes	(38,281)	(24,242)	8,197
Uncertain tax positions (non-deferred portion)	1,075	958	(89)
Non-current income taxes payable	0	856	(8,181)
Deferred compensation and other, net	(471)	(6,789)	2,914
Share-based compensation	10,996	4,861	3,724
Loss (gain) on disposal of property, plant and equipment and other assets	871	(58)	(657)
Insurance settlement realized	(1,035)	(822)	(1,055)
Indefinite-lived intangible asset impairment	38,000	0	0
Gain on inactive subsidiary litigation and settlement reserve	(18,144)	0	0
Combination and other acquisition-related expenses, net of payements	860	(14,414)	2,727
Restructuring and related charges	5,541	26,678	0
Pension and other postretirement benefits contributions	(16,535)	(46)	(1,392)
Increase (decrease) in cash from changes in current assets and current liabilities, net of acquisitions:
Accounts receivable	17,170	19,926	(2,822)
Inventories	(3,854)	10,844	(10,548)
Prepaid expenses and other current assets	927	(4,640)	(1,540)
Change in restructuring liabilities	(15,745)	(8,899)	0
Accounts payable and accrued liabilities	22,308	(8,915)	190
Estimated taxes on income	8,763	(1,373)	4,932
Net cash provided by operating activities	178,389	82,374	78,779
Cash flows from investing activities
Investments in property, plant and equipment	(17,901)	(15,545)	(12,886)
Payments related to acquisitions, net of cash acquired	(56,230)	(893,412)	(500)
Proceeds from disposition of assets	2,702	103	866
Insurance settlement interest earned	44	222	162
Net cash used in investing activities	(71,385)	(908,632)	(12,358)
Cash flows from financing activities
Payments of long-term debt	37,615	0	0
Proceeds from long-term debt	0	750,000	0
(Repayments) borrowings on revolving credit facilities, net	(11,485)	147,135	(21,120)
Repayments on other debt, net	(661)	(8,798)	(5,671)
Financing-related debt issuance costs	0	(23,747)	0
Dividends paid	(27,563)	(21,830)	(19,319)
Stock options exercised, other	3,867	1,370	82
Purchase of noncontrolling interest in affiliates, net	(1,047)	0	0
Distributions to noncontrolling affiliate shareholders	(751)	0	(877)
Net cash provided (used in) by financing activities	(75,255)	844,130	(46,905)
Effect of exchange rate changes on cash	6,591	1,258	(6,141)
Net increase in cash, cash equivalents and restricted cash	38,340	19,130	13,375
Cash, Cash Equivalents and Restricted Cash at the beginning of the period	143,555	124,425	111,050
Cash, Cash Equivalents and Restricted Cash at the end of the period	181,895	143,555	124,425
Supplemental Cash Flow Information [Abstract]
Income taxes, net of refunds	20,253	15,499	19,617
Interest	23,653	19,553	2,417
Other Noncash Investing And Financing Items [Abstract]
Change in accrued purchases of property, plant and equipment, net	$ 1,376	$ 1,978	$ 281

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Adjusted Balance [Member]	Common Stock [Member]	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member] Adjusted Balance [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member] Adjusted Balance [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Adjusted Balance [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Adjusted Balance [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member] Adjusted Balance [Member]
Beginning Balance at Dec. 31, 2017	$ 409,618	$ (754)	$ 408,864	$ 13,308	$ 0	$ 13,308	$ 93,528	$ 0	$ 93,528	$ 365,936	$ (754)	$ 365,182	$ (65,100)	$ 0	$ (65,100)	$ 1,946	$ 0	$ 1,946
Net income	59,811			0			0			59,473			0			338
Amounts reported in other comprehensive income (loss)	(15,705)			0			0			0			(15,615)			(90)
Dividends common stock	(19,530)			0			0			(19,530)			0			0
Distributions to noncontrolling affiliate shareholders	(877)			0			0			0			0			(877)
Shares issued upon exercise of stock options and other	(423)			9			(432)			0			0			0
Shares issued for employee stock purchase plan	505			3			502			0			0			0
Share based compensation plans	3,724			18			3,706			0			0			0
Ending Balance at Dec. 31, 2018	436,369	(44)	436,325	13,338	0	13,338	97,304	0	97,304	405,125	(44)	405,081	(80,715)	0	(80,715)	1,317	0	1,317
Net income	31,884			0			0			31,622			0			262
Amounts reported in other comprehensive income (loss)	2,570			0			0			0			2,545			25
Dividends common stock	(23,724)			0			0			(23,724)			0			0
Shares issued related to the Combination	789,080			4,329			784,751			0			0			0
Shares issued upon exercise of stock options and other	894			23			871			0			0			0
Shares issued for employee stock purchase plan	476			3			473			0			0			0
Share based compensation plans	4,861			42			4,819			0			0			0
Ending Balance at Dec. 31, 2019	1,242,366	$ (911)	$ 1,241,455	17,735	$ 0	$ 17,735	888,218	$ 0	$ 888,218	412,979	$ (911)	$ 412,068	(78,170)	$ 0	$ (78,170)	1,604	$ 0	$ 1,604
Net income	39,787			0			0			39,658			0			129
Amounts reported in other comprehensive income (loss)	51,480			0			0			0			51,572			(92)
Dividends common stock	(27,786)			0			0			(27,786)			0			0
Acquisition of noncontrolling interest	1,047			0			707			0			0			340
Distributions to noncontrolling affiliate shareholders	(751)			0			0			0			0			(751)
Shares issued upon exercise of stock options and other	6,780			66			6,714			0			0			0
Share based compensation plans	10,996			50			10,946			0			0			0
Ending Balance at Dec. 31, 2020	$ 1,320,914			$ 17,851			$ 905,171			$ 423,940			$ (26,598)			$ 550

Consolidated Statements of Changes in Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Consolidated Statement Of Changes In Equity Parentheticals [Abstract]
Dividends declared	$ 1.560	$ 1.525	$ 1.465

Significant Accounting Policies	12 Months Ended
Significant Accounting Policies	Dec. 31, 2020
Significant Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	Note 1 – Significant Accounting Policies As used in these Notes to Consolidated Financial Statements, the terms “Quaker”, “Quaker Houghton”, the “Company”, “we”, and “our” refer to Quaker Chemical Corporation (doing business as Quaker Houghton), its subsidiaries, and associated companies, unless the context otherwise requires. As used in these Notes to Consolidated Financial Statements, the term Legacy Quaker refers to the Company prior to the closing of its combination with Houghton International, Inc. (“Houghton”) (herein referred to as the “Combination”). Principles of consolidation: All majority-owned subsidiaries are included in the Company’s consolidated financial statements, with appropriate elimination of intercompany balances and transactions. Investments in associated companies (less than majority- owned and in which the Company has significant influence) are accounted for under the equity method. The Company’s share of net income or losses in these investments in associated companies is included in the Consolidated Statements of Income. The Company periodically reviews these investments for impairments and, if necessary, would adjust these investments to their fair value when a decline in market value or other impairment indicators are deemed to be other than temporary. See Note 17 of Notes to Consolidated Financial Statements. The Company is not the primary beneficiary of any variable interest entities (“VIEs”) and therefore the Company’s consolidated financial statements do not include the accounts of any VIEs. Translation of foreign currency: Assets and liabilities of non-U.S. subsidiaries and associated comp anies are translated into U.S. dollars at the respective rates of exchange prevailing at the end of the year. Income and expense accounts are translated at average exchange rates prevailing during the year. Translation adjustments resulting from this process are recorded directly in equity as accumulated other comprehensive (loss) income (“AOCI”) and will be included as income or expense only upon sale or liquidation of the underlying entity or asset. Generally, all of the Company’s non-U.S. subsidiaries use their local currency as their functional currency. Cash and cash equivalents: The Company invests temporary and excess funds in money market securities and financial instruments having maturities within 90 days. The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company has not experienced losses from the aforementioned investments. Inventories: Inventories are valued at the lower of cost or net realizable value, and are valued using the first-in, first-out method. See Note 14 of Notes to Consolidated Financial Statements. Long-lived assets: Property, plant and equipment (“PP&E”) are stated at gross cost, less accumulated depreciation. Depreciation is computed using the straight-line method on an individual asset basis over the following estimated useful lives: building s and improvements, 10 to 45 years; and machinery and equipment, 1 to 15 years. The carrying values of long-lived assets are evaluated whenever changes in circumstances or current events indicate the carrying amount of such assets may not be recoverable. An estimate of undiscounted cash flows produced by the asset, or the appropriate group of assets, is compared with the carrying value to determine whether an impairment exists. If necessary, the Company recognizes an impairment loss for the difference between the carrying amount of the assets and their estimated fair value. Fair value is based on current and anticipated future cash flows. Upon sale or other dispositions of long-lived assets, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposals, is recorded in the Consolidated Statements of Income. Expenditures for renewals or improvements that increase the estimated useful life or capacity of the assets are capitalized, whereas expenditures for repairs and maintenance are expensed when incurred. See Notes 9 and 15 of Notes to Consolidated Financial Statements. Capitalized software: The Company capitalizes certain costs in connection with developing or obtaining software for internal use, depending on the associated project. These costs are amortized over a period of 3 to 5 years once the assets are ready for their intended use. In connection with the implementations and upgrades to the Company’s global transaction, consolidation and other related systems, approximately $2.3 million and $2.6 million of net costs were capitalized in PP&E on the Company’s Consolidated Balance Sheets at December 31, 2020 and 2019, respectively. Goodwill and other intangible assets: The Company records goodwill, definite-lived intangible assets and indefinite-lived intangible assets at fair value at the date of acquisition. Goodwill and indefinite-lived intangible assets are not amortized but tested for impairment at least annually. These tests will be performed more frequently if triggering events indicate potential impairment. Definite-lived intangible assets are amortized on a straight -line basis over their estimated useful lives, generally for periods ranging from 4 to 20 years. The Company continually evaluates the reasonableness of the useful lives of these assets, consistent with the discussion of long-lived assets, above. See Note 16 of Notes to Consolidated Financial Statements. Revenue recognition: The Company applies the Financial Accounting Standards Board’s (“FASB’s”) guidance on revenue recognition which requires the Company to recognize revenue in an amount that reflects the consideration to which the Company expects to be entitled in exchange for goods or services transferred to its customers. To do this, the Company applies the five-step model in the FASB’s guidance, which requires the Company to: (i) identify the contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the Company satisfies a performance obligation. See Note 5 of Notes to Consolidated Financial Statements. Accounts receivable and allowance for doubtful accounts: Trade accounts receivable subject the Company to credit risk. Trade accounts receivable are recorded at the invoiced amount and generally do not bear interest. The allowance for doubtful accounts is the Company’s best estimate of the amount of expected credit losses with its existing accounts receivable. The Company adopted ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments on a modified retrospective basis, effective January 1, 2020. See Note 3 of Notes to the Consolidated Financial Statements. The Company recognizes an allowance for credit losses, which represents the portion of the receivable that the Company does not expect to collect over its contractual life, considering past events and reasonable and supportable forecasts of future economic conditions. The Company’s allowance for credit losses on its trade accounts receivable is based on specific collectability facts and circumstances for each outstanding receivable and customer, the aging of outstanding receivables, and the associated collection risk the Company estimates for certain past due aging categories, and also, the general risk to all outstanding accounts receivable based on historical amounts determined to be uncollectible. The Company does not have any off-balance-sheet credit exposure related to its customers. See Note 13 of Notes to Consolidated Financial Statements. Research and development costs Research and development costs are expensed as incurred and are included in selling, general and administrative expenses (“SG&A”). Research and development expenses were $40.0 million, $32.1 million and $24.5 million for the years ended December 31, 2020, 2019 and 2018, respectively. Environmental liabilities and expenditures: Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated. If there is a range of estimated liability and no amount in that range is considered more probable than another, then the Company records the lowest amount in the range in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). Environmental costs and remediation costs are capitalized if the costs extend the life, increase the capacity or improve safety or efficiency of the property from the date acquired or constructed, and/or mitigate or prevent contamination in the future. See Note 26 of Notes to Consolidated Financial Statements. Asset retirement obligations: The Company follows the FASB’s guidance regarding asset retirement obligations, which addresses the accounting and reporting for obligations associated with the retirement of tangible long-lived assets and the associated retirement costs. Also, the Company follows the FASB’s guidance for conditional asset retirement obligations (“CARO”), which relates to legal obligations to perform an asset retirement activity in which the timing and (or) method of settlement are conditional on a future event that may or may not be within the control of the entity. In accordance with this guidance, the Company records a liability when there is enough information regarding the timing of the CARO to perform a probability-weighted discounted cash flow analysis. As of December 31, 2020 and 2019, the Company had limited exposure to such obligations and had immaterial liabilities recorded for such on its Consolidated Balance Sheets. Pension and o ther postretirement benefits: The Company maintains various noncontributory retirement plans, covering a portion of its employees in the U.S. and certain other countries, including the Netherlands, the United Kingdom (“U.K.”), Mexico, Sweden, Germany and France. These retirement plans are subject to the provisions of FASB’s guidance regarding employers’ accounting for defined benefit pension plans. The plans of the remaining non-U.S. subsidiaries are, for the most part, either fully insured or integrated with the local governments’ plans and are not subject to the provisions of the guidance. The guidance requires that employers recognize on a prospective basis the funded status of their defined benefit pension and other postretirement plans on their consolidated balance sheet and, also, recognize as a component of AOCI, net of tax, the gains or losses and prior service costs or credits that arise during the period but are not recognized as components of net periodic benefit cost. In addition, the guidance requires that an employer recognize a settlement charge in their consolidated statement of income when certain events occur, including plan termination or the settlement of certain plan liabilities. A settlement charge represents the immediate recognition into expense of a portion of the unrecognized loss within AOCI on the balance sheet in proportion to the share of the projected benefit obligation that was settled. The Company’s Legacy Quaker U.S. pension plan year ends on November 30 and the measurement date is December 31. The measurement date for the Company’s other postretirement benefits plan is December 31. The Company’s global pension investment policies are designed to ensure that pension assets are invested in a manner consistent with meeting the future benefit obligations of the pension plans and maintaining compliance with various laws and regulations including the Employee Retirement Income Security Act of 1974. The Company establishes strategic asset allocation percentage targets and benchmarks for significant asset classes with the aim of achieving a prudent balance between return and risk. The Company’s investment horizon is generally long term, and, accordingly, the target asset allocations encompass a long-term perspective of capital markets, expected risk and return and perceived future economic conditions while also considering the profile of plan liabilities. To the extent feasible, the short-term investment portfolio is managed to match the short-term obligations, the intermediate portfolio duration is matched to reduce the risk of volatility in intermediate plan distributions, and the total return portfolio is managed to maximize the long-term real growth of plan assets. The critical investment principles of diversification, assessment of risk and targeting the optimal expected returns for given levels of risk are applied. The Company’s investment guidelines prohibit the use of securities such as letter stock and other unregistered securities, commodities or commodity contracts, short sales, margin transactions, private placements (unless specifically addressed by addendum), or any derivatives, options or futures for the purpose of portfolio leveraging. The target asset allocation is reviewed periodically and is determined based on a long-term projection of capital market outcomes, inflation rates, fixed income yields, returns, volatilities and correlation relationships. The interaction between plan assets and benefit obligations is periodically studied to assist in establishing such strategic asset allocation targets. Asset performance is monitored with an overall expectation that plan assets will meet or exceed benchmark performance over rolling five-year periods. The Company’s pension committee, as authorized by the Company’s Board of Directors, has discretion to manage the assets within established asset allocation ranges approved by senior management of the Company. See Note 21 of Notes to Consolidated Financial Statements. Comprehensive income (loss): The Company presents other comprehensive income (loss) in its Statements of Comprehensive Income. The Company follows the FASB’s guidance regarding the disclosure of reclassifications from AOCI which requires the disclosure of significant amounts reclassified from each component of AOCI, the related tax amounts and the income statement line items affected by such reclassifications. See Note 23 of Notes to Consolidated Financial Statements. Income taxes and uncertain tax positions: The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for income taxes represents income taxes paid or payable for the current year and the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax bases of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. The FASB’s guidance regarding accounting for uncertainty in income taxes prescribes the recognition threshold and measurement attributes for financial statement recognition and measurement of tax positions taken or expected to be taken on a tax return. The guidance further requires the determination of whether the benefits of tax positions are probable or more likely than not sustained upon audit based upon the technical merits of the tax position. For tax positions that are determined to be more likely than not sustained upon audit, a company recognizes the largest amount of benefit that is greater than 50 % likely of being realized upon ultimate settlement in the financial statements. For tax positions that are not determined to be more likely than not sustained upon audit, a company does not recognize any portion of the benefit in the financial statements. Additionally, the Company monitors and adjusts for derecognition, classification, and penalties and interest in interim periods, with appropriate disclosure and transition thereto. Also, the amount of interest expense and income related to uncertain tax positions is computed by applying the applicable statutory rate of interest to the difference between the tax position recognized, including timing differences, and the amount previously taken or expected to be taken in a tax return. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. Finally, when applicable, the Company nets its liability for unrecognized tax benefits against deferred tax assets related to net operating losses or other tax credit carryforwards that would apply if the uncertain tax position were settled for the presumed amount at the balance sheet date. Pursuant to the Tax Cuts and Jobs Act (“U.S. Tax Reform”), specifically the one-time tax on deemed repatriation (the “Transition Tax”), the Company has provided for U.S. income tax on its undistributed earnings of non-U.S. subsidiaries, however, the Company is subject to and will incur other taxes, such as withholding taxes and dividend distribution taxes, if these undistributed earnings were ultimately remitted to the U.S. The Company currently intends to reinvest its future undistributed earnings of non-U.S. subsidiaries to support working capital needs and certain other growth initiatives of those subsidiaries. However, in certain cases the Company has and may in the future change its indefinite reinvestment assertion for any or all of these undistributed earnings. In this case, the Company would estimate and record a tax liability and corresponding tax expense for the amount of non-U.S. income taxes it would incur to ultimately remit these earnings to the U.S. See Note 10 of Notes to Consolidated Financial Statements. Derivatives: The Company is exposed to the impact of changes in interest rates, foreign currency fluctuations, changes in commodity prices and credit risk. The Company utilizes interest rate swap agreements to enhance its ability to manage risk, including exposure to variability in interest payments associated with its variable rate debt. Derivative instruments are entered into for periods consistent with the related underlying exposures and do not constitute positions independent of those exposures. As of December 31, 2020 and 2019, the Company had certain interest rate swap agreements that were designated as cash flow hedges. Interest rate swaps are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. The Company records these instruments on a net basis within the Consolidated Balance Sheets. The effective portion of the change in fair value of the agreement is recorded in AOCI and will be recognized in the Consolidated Statements of Income when the hedge item affects earnings or losses or it becomes probable that the forecasted transaction will not occur. See Note 25 of Notes to Consolidated Financial Statements. Fair value measurements: The Company utilizes the FASB’s guidance regarding fair value measurements, which establishes a common definition for fair value to be applied to guidance requiring use of fair value, establishes a framework for measuring fair value and expands disclosure about such fair value measurements. Specifically, the guidance utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. See Notes 21 and 24 of Notes to Consolidated Financial Statements. The following is a brief description of those three levels: • Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. • Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. • Level 3: Unobservable inputs that reflect the reporting entity's own assumptions. Share-based compensation: The Company applies the FASB’s guidance regarding share-based payments, which requires the recognition of the fair value of share-based compensation as a component of expense. The Company has a long-term incentive program (“LTIP”) for key employees which provides for the granting of options to purchase stock at prices not less than its market value on the date of the grant. Most options become exercisable within three years after the date of the grant for a period of time determined by the Company, but not to exceed seven years from the date of grant. Restricted stock awards and restricted stock units issued under the LTIP program are subject to time vesting generally over a one to three-year period. In addition, as part of the Company’s Annual Incentive Plan, nonvested shares may be issued to key employees, which generally would vest over a two to five - year period. In addition, while the FASB’s guidance permits the Company to make an accounting policy election to account for forfeitures as they occur for service condition aspects of certain share-based awards, the Company has decided not to elect this accounting policy and instead has elected to continue utilizing a forfeiture rate assumption. Based on historical experience, the Company has assumed a forfeiture rate of 13 % on certain of its nonvested stock awards. The Company will record additional expense if the actual forfeiture rate is lower than estimated and will record a recovery of prior expense if the actual forfeiture is higher than estimated. The Company also issues performance-dependent stock awards as a component of its LTIP. The fair value of the performance- dependent stock awards is based on their grant-date market value adjusted for the likelihood of attaining certain pre -determined performance goals and is calculated by utilizing a Monte Carlo Simulation model. Compensation expense is recognized on a straight- line basis over the vesting period, generally three years . See Note 8 of the Notes to Consolidated Financial Statements. Earnings per share: The Company follows the FASB’s guidance regarding the calculation of earnings per share for nonvested stock awards with rights to non-forfeitable dividends. The guidance requires nonvested stock awards with rights to non-forfeitable dividends to be included as part of the basic weighted average share calculation under the two-class method. See Note 11 of Notes to Consolidated Financial Statements. Segments: The Company’s reportable segments reflect the structure of the Company’s internal organization, the method by which the Company’s resources are allocated and the manner by which the Company and the chief operating decision maker assess its performance . See Note 4 of Notes to Consolidated Financial Statements. Hyper-inflationary accounting: Economies that have a cumulative three-year rate of inflation exceeding 100 % are considered hyper-inflationary in accordance with U.S. GAAP. A legal entity that operates within an economy deemed to be hyper-inflationary is required to remeasure its monetary assets and liabilities to the applicable published exchange rates and record the associated gains or losses resulting from the remeasurement directly to the Consolidated Statements of Income. Venezuela’s economy has been considered hyper-inflationary under U.S. GAAP since 2010. The Company has a 50 % equity interest in a Venezuelan affiliate, Kelko Quaker Chemical, S.A (“Kelko Venezuela”). Due to heightened foreign exchange controls and restrictions currently present within Venezuela, during the third quarter of 2018 the Company concluded that it no longer had significant influence over this affiliate. Prior to this determination, the Company historically accounted for this affiliate under the equity method. As of December 31, 2020 and 2019, the Company had no remaining carrying value for its investment in Kelko Venezuela. See Note 17 of Notes to Consolidated Financial Statements. Based on various indices or index compilations currently being used to monitor inflation in Argentina as well as recent economic instability, effective July 1, 2018, Argentina’s economy was considered hyper-inflationary under U.S. GAAP. As a result, the Company began applying hyper-inflationary accounting with respect to the Company's wholly owned Argentine subsidiary beginning July 1, 2018. In addition, Houghton has an Argentine subsidiary to which hyper-inflationary accounting also is applied. As of, and for the year ended December 31, 2020, the Company's Argentine subsidiaries represented less than 1 % of the Company’s consolidated total assets and net sales, respectively. During the years ended December 31, 2020, 2019 and 2018, the Company recorded $0.4 million, $1.0 million, and $0.7 million, respectively, of remeasurement losses associated with the applicable currency conversions related to Venezuela and Argentina. Business combinations: The Company accounts for business combinations under the acquisition method of accounting. This method requires the recording of acquired assets, including separately identifiable intangible assets and assumed liabilities at their respective acquisition date estimated fair values. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. The determination of the estimated fair value of assets acquired and liabilities assumed requires significant estimates and assumptions. Based on the assessment of additional information during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the estimated fair value of assets acquired and liabilities assumed. See Note 2 of Notes to Consolidated Financial Statements. Restructuring activities: Restructuring programs consist of employee severance, rationalization of manufacturing or other facilities and other related items. To account for such programs, the Company applies FASB’s guidance regarding exit or disposal cost obligations. This guidance requires that a liability for a cost associated with an exit or disposal activity be recognized when the liability is incurred, is estimable, and payment is probable. See Note 7 of Notes to Consolidated Financial Statements. Reclassifications: Certain information has been reclassified to conform to the current year presentation. Accounting estimates: The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingencies at the date of the financial statements and the reported amounts of net sales and expenses during the reporting period. Actual results could differ from such estimates.

Business Combination	12 Months Ended
Business Combination	Dec. 31, 2020
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Note 2 – Business Combinations Houghton On August 1, 2019 , the Company completed the Combination, whereby the Company acquired all of the issued and outstanding shares of Houghton from Gulf Houghton Lubricants, Ltd. and certain other selling shareholders in exchange for a combination of cash and shares of the Company’s common stock in accordance with the Share Purchase Agreement dated April 4, 2017. Houghton is a leading global provider of specialty chemicals and technical services for metalworking and other industrial applications. The Company believes that combining the Legacy Quaker and Houghton products and service offerings allows Quaker Houghton to better serve its customers in its various end markets. The Combination was subject to certain regulatory and shareholder approvals. At a shareholder meeting held during 2017, the Company’s shareholders approved the issuance of new shares of the Company’s common stock at closing of the Combination. Also in 2017, the Company received regulatory approvals for the Combination from China and Australia. The Company received regulatory approvals from the European Commission (“EC”) during the second quarter of 2019 and the U.S. Federal Trade Commission (“FTC”) in July 2019. The approvals from the FTC and the EC required the concurrent divestiture of certain steel and aluminum related product lines of Houghton, which were sold by Houghton on August 1, 2019 for approximately $ 37 million in cash. The final remedy agreed with the EC and the FTC was consistent with the Company’s previous expectation that the total divested product lines would be approximately 3 % of the combined company’s net sales. The following table summarizes the fair value of consideration transferred in the Combination: Cash transferred to Houghton shareholders (a) $ 170,829 Cash paid to extinguish Houghton debt obligations 702,556 Fair value of common stock issued as consideration (b) 789,080 Total fair value of consideration transferred $ 1,662,465 (a) A portion is held in escrow by a third party, subject to indemnification rights that lapse upon the achievement of certain milestones. (b) Amount was determined based on approximately 4.3 million shares, comprising 24.5 % of the common stock of the Company immediately after the closing, and the closing price per share of Quaker Chemical Corporation common stock of $ 182.27 on August 1, 2019. The Company accounted for the Combination under the acquisition method of accounting. This method requires the recording of acquired assets, including separately identifiable intangible assets, at their fair value on the acquisition date. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. The determination of the estimated fair value of assets acquired, including indefinite and definite-lived intangible assets, requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, discount rates, customer attrition rates, royalty rates, asset lives and market multiples, among other items. Fair values were determined by management using a variety of methodologies and resources, including external independent valuation experts. The valuation methods included physical appraisals, discounted cash flow analyses, excess earnings, relief from royalty, and other appropriate valuation techniques to determine the fair value of assets acquired and liabilities assumed. The following table presents the final estimated fair values of Houghton net assets acquired: Measurement August 1, Period August 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 75,821 $ — $ 75,821 Accounts receivable 178,922 — 178,922 Inventories 95,193 — 95,193 Prepaid expenses and other assets 10,652 666 11,318 Property, plant and equipment 115,529 (66) 115,463 Right of use lease assets 10,673 — 10,673 Investments in associated companies 66,447 — 66,447 Other non-current assets 4,710 1,553 6,263 Intangible assets 1,028,400 — 1,028,400 Goodwill 494,915 4,625 499,540 Total assets purchased 2,081,262 6,778 2,088,040 Short-term borrowings, not refinanced at closing 9,297 — 9,297 Accounts payable, accrued expenses and other accrued liabilities 150,078 1,127 151,205 Deferred tax liabilities 205,082 4,098 209,180 Long-term lease liabilities 6,607 — 6,607 Other non-current liabilities 47,733 1,553 49,286 Total liabilities assumed 418,797 6,778 425,575 Total consideration paid for Houghton 1,662,465 — 1,662,465 Less: cash acquired 75,821 — 75,821 Less: fair value of common stock issued as consideration 789,080 — 789,080 Net cash paid for Houghton $ 797,564 $ — $ 797,564 (1) As previously disclosed in the Company’s 2019 Form 10-K. During 2020, the allocation of the purchase price for the Combination was finalized and the one-year measurement period has ended. Houghton assets acquired and liabilities assumed were assigned to each of the Company’s reportable segments on a specific identification or allocated basis, as applicable. Prior to finalizing the purchase price allocation, certain measurement period adjustments were recorded during 2020 related primarily to increasing the valuation allowances against the deferred tax assets associated with foreign tax credits acquired as part of the Combination as additional information became available and was used to update the Company’s initial estimates of expenses allocated to foreign source income and expected creditable foreign taxes. In addition, measurement period adjustments included the recognition of additional other non-current assets and other non-current liabilities based on additional information obtained regarding certain tax audits and associated rights to indemnification, and certain non-income tax liabilities payable upon closing of the Combination in certain countries. The Company allocated $ 1,028.4 million of the purchase price to intangible assets, including certain measurement period adjustments, comprised of $ 242.0 million of trademarks and tradename, to which management has assigned indefinite lives; $ 677.3 million of customer relationships, to be amortized over 15 to 18 years; and $ 109.1 million of existing product technology, to be amortized over 20 years. In addition, the Company recorded $ 499.5 million of goodwill, including measurement period adjustments, related to expected value not allocated to other acquired assets, none of which will be tax deductible. See Note 16 of Notes to Consolidated Financial Statements. Factors contributing to the purchase price that resulted in goodwill included the acquisition of management, business processes and personnel that will allow Quaker Houghton to better serve its customers. The expanded portfolio is expected to generate significant cross-selling opportunities and allow further expansion into certain emerging growth markets. Commencing August 1, 2019, the Company’s Consolidated Statements of Income included the results of Houghton. Net sales of Houghton subsequent to closing of the Combination and included in the Company’s Consolidated Statements of Income for the year ended December 31, 2019 were $ 299.8 million. The following unaudited pro forma consolidated financial information has been prepared as if the Combination had taken place on January 1, 2018. The unaudited pro forma results include certain adjustments to each company’s historical actual results, including: (i) additional depreciation and amort ization expense based on the initial estimates of fair value step up and estimated useful lives of depreciable fixed assets, definite-lived intangible assets and investment in associated companies acquired; (ii) adoption of required accounting guidance and alignment of related accounting policies, (iii) elimination of transactions between Legacy Quaker and Houghton; (iv) elimination of results associated with the divested product lines; (v) adjustment to interest expense, net, to reflect the impact of the financing and capital structure of the combined Company; and (vi) adjustment for certain Combination, integration and other acquisition-related costs to reflect such costs as if they were incurred in the period immediately following the pro-forma closing of the Combination on January 1, 2018. The adjustments described in (vi) include an expense recorded in costs of goods sold (“COGS”) associated with selling inventory acquired in the Combination which was adjusted to fair value as part of purchase accounting, restructuring expense incurred associated with the Company’s global restructuring program initiated post-closing of the Combination and certain other integration costs incurred post-closing included in combination and other acquisition-related expenses. These costs have been presented in the unaudited pro forma table below as these costs on a pro forma basis were incurred during the year ended December 31, 2018. Unaudited pro forma results are not necessarily indicative of the results that would have occurred if the acquisition had occurred on the date indicated, or that may result in the future for various reasons, including the potential impact of revenue and cost synergies on the business. For the years ending Unaudited Pro Forma December 31, (as if the Combination occurred on January 1, 2018) 2019 2018 Net sales $ 1,562,427 $ 1,654,588 Net income attributable to Quaker Chemical Corporation 94,537 35,337 Combination, integration and other acquisition-related expenses have been and are expected to continue to be significant. The Company incurred total costs of $ 30.3 million, $ 38.0 million and $ 19.5 million for the years ended December 31, 2020, 2019 and 2018 related to the Combination, integration and other acquisition-related activities. These costs included certain legal, financial and other advisory and consultant costs related to due diligence, regulatory approvals and closing the Combination, as well as integration planning and post-closing integration activities including internal control readiness and remediation. These costs also include interest costs to maintain the bank commitment (“ticking fees”) for the Combination during each of the years ended December 31, 2019 and 2018, accelerated depreciation charges during the year s ended December 31, 2020 and 2019, a loss on the sale of a held-for-sale asset during the year ended December 31, 2020, and a gain on the sale of a held-for-sale asset during the year ended December 31, 2018. As of December 31, 2020 and 2019, the Company had current liabilities related to the Combination and other acquisition-related activities of $ 7.5 million and $ 6.6 million, respectively, primarily recorded within other accrued liabilities on its Consolidated Balance Sheets. Norman Hay In October 2019 , the Company completed its acquisition of the operating divisions of Norman Hay plc (“Norman Hay”), a private U.K. company that provides specialty chemicals, operating equipment, and services to industrial end markets. The acquisition adds new technologies in automotive, original equipment manufacturer (“OEM”), and aerospace, as well as engineering expertise which is expected to strengthen the Company’s existing equipment solutions platform. The acquired Norman Hay assets and liabilities were assigned to the Global Specialty Businesses reportable segment. The original purchase price was 80.0 million GBP, on a cash-free and debt-free basis, subject to routine and customary post-closing adjustments related to working capital and net indebtedness levels. The following table presents the final estimated fair values of Norman Hay net assets acquired: Measurement October 1, Period October 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 18,981 $ — $ 18,981 Accounts receivable 15,471 — 15,471 Inventories 8,213 (49) 8,164 Prepaid expenses and other assets 4,203 138 4,341 Property, plant and equipment 14,981 — 14,981 Right of use lease assets 10,608 — 10,608 Intangible assets 51,088 — 51,088 Goodwill 29,384 (82) 29,302 Total assets purchased 152,929 7 152,936 Long-term debt included current portions 485 — 485 Accounts payable, accrued expenses and other accrued liabilities 13,488 (732) 12,756 Deferred tax liabilities 12,746 905 13,651 Long-term lease liabilities 8,594 — 8,594 Total liabilities assumed 35,313 173 35,486 Total consideration paid for Norman Hay 117,616 (166) 117,450 Less: estimated purchase price settlement (2) 3,287 (3,287) — Less: cash acquired 18,981 — 18,981 Net cash paid for Norman Hay $ 95,348 $ 3,121 $ 98,469 (1) As previously disclosed in the Company’s 2019 Form 10-K. (2) The Company finalized its post-closing adjustments for the Norman Hay acquisition and paid approximately 2.5 million GBP during the first quarter of 2020 to settle such adjustments. During 2020, the allocation of the purchase price for Norman Hay was finalized and the one-year measurement period has ended. The Company allocated $ 51.1 million of the purchase price to intangible assets, comprised of $ 36.9 million of customer relationships, to be amortized over 13 to 17 years; $ 7.5 million of existing product technology, to be amortized over 20 years; $ 6.3 million of trademarks, to be amortized over 16 to 17 years; and $ 0.4 million of non-compete agreements, to be amortized over 2 to 11 years. In addition, the Company recorded $ 29.3 million of goodwill related to expected value not allocated to other acquired assets, none of which will be tax deductible. Factors contributing to the purchase price that resulted in goodwill included the acquisition of management, business processes and personnel that will allow Quaker Houghton to better serve its customers. The results of operations of Norman Hay are included in the Consolidated Statements of Income as of October 1, 2019. Transaction expenses associated with this acquisition are included in Combination, integration and other acquisition-related expenses in the Company’s Consolidated Statements of Income. Certain pro forma and other information is not presented, as the operations of Norman Hay are not considered material to the overall operations of the Company for the periods presented. Coral Chemical Company In December 2020 , the Company completed its acquisition of Coral Chemical Company (“Coral”), a privately held, U.S.-based provider of metal finishing fluid solutions. The acquisition provides technical expertise and product solutions for pre-treatment, metalworking and wastewater treatment applications to the beverage cans and general industrial end markets. The acquired Coral assets and liabilities were assigned to the Americas and Global Specialty Businesses reportable segments. The original purchase price was approximately $ 54.1 million, subject to routine and customary post-closing adjustments related to working capital and net indebtedness levels. The following table presents the preliminary estimated fair values of Coral net assets acquired: December 22, 2020 Cash and cash equivalents $ 958 Accounts receivable 8,473 Inventories 4,527 Prepaid expenses and other assets 181 Property, plant and equipment 10,467 Intangible assets 30,300 Goodwill 2,814 Total assets purchased 57,720 Long-term debt included current portions 183 Accounts payable, accrued expenses and other accrued liabilities 3,482 Total liabilities assumed 3,665 Total consideration paid for Coral 54,055 Less: cash acquired 958 Net cash paid for Coral $ 53,097 The Company allocated $ 30.3 million of the purchase price to intangible assets, comprised of $ 22.0 million of customer relationships, to be amortized over 21 to 24 years; $ 4.7 million of existing product technology, to be amortized over 14 to 15 years; $ 3.6 million of trademarks, to be amortized over 17 years. In addition, the Company recorded $ 2.8 million of goodwill related to expected value not allocated to other acquired assets, none of which will be tax deductible. Factors contributing to the purchase price that resulted in goodwill included the acquisition of management, business processes and personnel that will allow Quaker Houghton to better serve its customers. As of December 31, 2020, the allocation of the purchase price for Coral has not been finalized and the one-year measurement period has not ended. Further adjustments may be necessary as a result of the Company’s on-going assessment of additional information related to the fair value of assets acquired and liabilities assumed. The preliminary purchase price allocations are based upon the valuation of assets and these estimates and assumptions are subject to change as the Company obtains additional information during the measurement period. These assets pending finalization include fixed assets and intangible assets which could also result in adjustments to goodwill. The results of operations of Coral subsequent to the acquisition date are included in the Consolidated Statements of Income as of December 31, 2020. Transaction expenses associated with this acquisition are included in Combination, integration and other acquisition-related expenses in the Company’s Consolidated Statements of Income. Certain pro forma and other information is not presented, as the operations of Coral are not considered material to the overall operations of the Company for the periods presented. Other Acquisitions In February 2021, the Company acquired certain assets related to tin-plating solutions in the steel end market for approximately $ 25 million. The results of operations of the acquired assets are not included in the Consolidated Statements of Income, because the date of closing was after December 31, 2020. Transaction expenses associated with this acquisition that were incurred during the year ended December 31, 2020 are included in Combination, integration and other acquisition-related expenses in the Company’s Consolidated Statements of Income. A preliminary purchase price allocation of assets acquired and liabilities assumed has not been presented as that information is not available as of the date of these Consolidated Financial Statements. In May 2020, the Company acquired Tel Nordic ApS (“TEL”), a company that specializes in lubricants and engineering primarily in high pressure aluminum die casting for its Europe, Middle East and Africa (“EMEA”) reportable segment. Consideration paid was in the form of a convertible promissory note in the amount of 20.0 million DKK, or approximately $ 2.9 million, which was subsequently converted into shares of the Company’s common stock. An adjustment to the purchase price of approximately 0.4 million DKK, or less than $ 0.1 million, was made as a result of finalizing a post-closing settlement in the second quarter of 2020. The Company allocated approximately $ 2.4 million of the purchase price to intangible assets to be amortized over 17 years. In addition, the Company recorded approximately $ 0.5 million of goodwill, related to expected value not allocated to other acquired assets, none of which will be tax deductible. The allocation of the purchase price of TEL has not been finalized and the one-year measurement period has not ended. Further adjustments may be necessary as a result of the Company’s on-going assessment of additional information related to the fair value of assets acquired and liabilities assumed. In March 2020, the Company acquired the remaining 49 % ownership interest in one of its South African affiliates, Quaker Chemical South Africa Limited (“QSA”) for 16.7 million ZAR, or approximately $ 1.0 million, from its joint venture partner PQ Holdings South Africa. QSA is a part of the Company’s EMEA reportable segment. As this acquisition was a change in an existing controlling ownership, the Company recorded $ 0.7 million of excess purchase price over the carrying value of the noncontrolling interest in Capital in excess of par value. In March 2018, the Company purchased certain formulations and product technology for the mining industry for $ 1.0 million. The Company allocated the entire purchase price to intangible assets representing formulations and product technology, to be amortized over 10 years. In accordance with the terms of the applicable purchase agreement, $ 0.5 million of the purchase price was paid at signing, and the remaining $ 0.5 million of the purchase price was paid during the first quarter of 2019.

Recently Issued Accounting Standards	12 Months Ended
Recently Issued Accounting Standards	Dec. 31, 2020
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Note 3 – Recently Issued Accounting Standards Recently Issued Accounting Standards Adopted The FASB issued Account Standards Update (“ASU”) 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. The amendments provide temporary optional expedients and exceptions for applying GAAP to contract modifications, hedging relationships and other transactions to ease the potential accounting and financial reporting burden associated with transitioning away from reference rates that are expected to be discontinued, including the London Interbank Offered Rate (“LIBOR”). ASU 2020-04 is effective for the Company as of March 12, 2020 and generally can be applied through December 31, 2022. As of December 31, 2020, the expedients provided in ASU 2020-04 do not impact the Company; however, the Company will continue to monitor for potential impacts on its consolidated financial statements. The FASB issued ASU 2018-15 , Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract in August 2018 that clarifies the accounting for implementation costs incurred in a cloud computing arrangement under a service contract. This guidance generally aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement under a service contract with the requirements for capitalizing implementation costs related to internal-use software. The guidance within this accounting standard update is effective for annual periods beginning after December 15, 2019 and should be applied either retrospectively or prospec tively to all implementation costs incurred after the date of adoption. Early adoption was permitted. The Company adopted this standard on a prospective basis, effective January 1, 2020. There was no cumulative effect of adoption recorded within retained earnings on January 1, 2020. The FASB issued ASU 2018-14, Disclosure Framework — Changes to the Disclosure Requirements for Defined Benefit Plans in August 2018 that modifies certain disclosure requirements for fair value measurements. The guidance removes certain disclosure requirements regarding transfers between levels of the fair value hierarchy as well as certain disclosures related to the valuation processes for certain fair value measurements. Further, the guidance added certain disclosure requirements including unrealized gains and losses and significant unobservable inputs used to develop certain fair value measurements. The guidance within this accounting standard update is effective for annual and interim periods beginning after December 15, 2019, and should be applied prospectively in the initial year of adoption or prospectively to all periods presented, depending on the amended disclosure requirement. Early adoption was permitted. The Company adopted this standard on a prospective basis, effective January 1, 2020. ASU 2018-14 addresses disclosures only and will not have an impact on the Company’s consolidated financial statements. The FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement in August 2018 that modifies certain disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments in this ASU remove disclosures that are no longer considered cost beneficial, clarify the specific requirements of certain disclosures, and add new disclosure requirements as relevant. The guidance within this accounting standard update is effective for annual periods beginning after December 15, 2019, and should be applied retrospectively to all periods presented. The Company adopted this standard on a prospective basis, effective January 1, 2020. There was no cumulative effect of adoption recorded within retained earnings on January 1, 2020. The FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments in June 2016 related to the accounting for and disclosure of credit losses. The FASB subsequently issued several additional accounting standard updates which amended and clarified the guidance, but did not materially change the guidance or its applicability to the Company. This accounting guidance introduces a new model for recognizing credit losses on financial instruments, including customer accounts receivable, based on an estimate of current expected credit losses. The Company adopted the guidance in this accounting standard update, including all applicable subsequent updates to this accounting guidance, as required, on a modified retrospective basis, effective January 1, 2020. Adoption did not have a material impact to the Company’s financial statements as expected. However, as a result of this adoption, the Company recorded a cumulative effect of accounting change that resulted in an increase to its allowance for doubtful accounts of approximately $ 1.1 million, a decrease to deferred tax liabilities of $ 0.2 million and a decrease to retained earnings of $ 0.9 million. In accordance with this guidance, the Company recognizes an allowance for credit losses reflecting the net amount expected to be collected from its financial assets, primarily trade accounts receivable. This allowance represents the portion of the receivable that the Company does not expect to collect over its contractual life, considering past events and reasonable and supportable forecasts of future economic conditions. The Company’s allowance for credit losses on its trade accounts receivable is based on specific collectability facts and circumstances for each outstanding receivable and customer, the aging of outstanding receivables and the associated collection risk the Company estimates for certain past due aging categories, and also, the general risk to all outstanding accounts receivable based on historical amounts determined to be uncollectible. See Note 13 of Notes to the Consolidated Financial Statements.
Description Of New Accounting Pronouncements Not Yet Adopted [Text Block]	Recently Issued Accounting Standards Not Yet Adopted The FASB issued ASU 2020-01, Investments – Equity Securities (To pic 321), Investments – Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) –Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 in January 2020 clarifying the interaction among the accounting standards related to equity securities, equity method investments, and certain derivatives. The new guidance, among other things, states that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting, for the purposes of applying the fair value measurement alternative immediately before applying or upon discontinuing the equity method. The new guidance also addresses the measurement of certain purchased options and forward contracts used to acquire investments. The guidance within this accounting standard update is effective for annual and interim periods beginning after December 15, 2020 and is to be applied prospectively. Early adoption is permitted. The Company will adopt this standard, as required, on a prospective basis, effective January 1, 2021, and does not expect adoption to have an impact to its financial statements. The FASB issued ASU 2019-12 , Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes in December 2019. The guidance within this accounting standard update removes certain exceptions, including the exception to the incremental approach for certain intra-period tax allocations, to the requirement to recognize or not recognize certain deferred tax liabilities for equity method investments and foreign subsidiaries, and to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. Further, the guidance simplifies the accounting related to franchise taxes, the step up in tax basis for goodwill, current and deferred tax expense, and codification improvements for income taxes related to employee stock ownership plans. The guidance is effective for annual and interim periods beginning after December 15, 2020. Early adoption is permitted. The Company will adopt this standard, as required, effective January 1, 2021, and is currently evaluating its implementation and any potential adoption impact.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (g)(2)
-URI http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-URI http://asc.fasb.org/topic&trid=2122394

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section S99
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=112272810&loc=SL108384541-122693

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (i)(2)
-URI http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(ii)
-URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(i)
-URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iv)
-URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 11.M.Q2)
-URI http://asc.fasb.org/extlink&oid=112272810&loc=d3e31137-122693

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 65
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 65
-Paragraph 2
-Subparagraph (f)(3)
-URI http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 10
-Section 65
-Paragraph 4
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (h)(2)
-URI http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 10
-Section 65
-Paragraph 4
-Subparagraph (e)(2)
-URI http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 65
-Paragraph 8
-Subparagraph (e)(1)

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 65
-Paragraph 8
-Subparagraph (e)(2)

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 65
-Paragraph 8
-Subparagraph (e)(3)

+ Details

Business Segments	12 Months Ended
Business Segments	Dec. 31, 2020
Segment Disclosures [Abstract]
Segment Reporting Disclosure [Text Block]	Note 4 – Business Segments The Company’s operating segments, which are consistent with its reportable segments, reflect the structure of the Company’s internal organization, the method by which the Company’s resources are allocated and the manner by which the chief operating decision maker assess the Company’s performance. During the third quarter of 2019 and in connection with the Combination, the Company reorganized its executive management team to align with its new business structure, which reflects the method by which the chief operating decision maker assesses the Company’s performance and allocates its resources. The Company’s current reportable segment structure includes four segments: (i) Americas; (ii) EMEA; (iii) Asia/Pacific; and (iv) Global Specialty Businesses. The three geographic segments are composed of the net sales and operations in each respective region, excluding net sales and operations managed globally by the Global Specialty Businesses segment, which includes the Company’s container, metal finishing, mining, offshore, specialty coatings, specialty grease and Norman Hay businesses. Although the Company changed its reportable segments in the third quarter of 2019, the calculation of the reportable segments’ measures of earnings remains otherwise generally consistent with past practices. Segment operating earnings for each of the Company’s reportable segments are comprised of the segment’s net sales less directly related COGS and SG&A. Operating expenses not directly attributable to the net sales of each respective segment, such as certain corporate and administrative costs, Combination, integration and other acquisition-related expenses, and Restructuring and related charges, are not included in segment operating earnings. Other items not specifically identified with the Company’s reportable segments include interest expense, net and other expense, net. The following tables present information about the performance of the Company’s reportable segments for the years ended December 31, 2020, 2019 and 2018. Certain immaterial reclassifications within the segment disclosures for the years ended December 31, 2019 and 2018 have been made to conform with the Company’s current customer industry segmentation. 2020 2019 2018 Net sales Americas $ 450,161 $ 392,121 $ 297,601 EMEA 383,187 285,570 216,984 Asia/Pacific 315,299 247,839 192,502 Global Specialty Businesses 269,030 207,973 160,433 Total net sales $ 1,417,677 $ 1,133,503 $ 867,520 2020 2019 2018 Segment operating earnings Americas $ 96,379 $ 78,297 $ 62,686 EMEA 69,163 47,014 36,119 Asia/Pacific 88,356 67,512 53,739 Global Specialty Businesses 79,690 58,881 42,931 Total segment operating earnings 333,588 251,704 195,475 Combination, integration and other acquisition-related expenses (29,790) (35,477) (16,661) Restructuring and related charges (5,541) (26,678) — Fair value step up of inventory sold (226) (11,714) — Indefinite-lived intangible asset impairment (38,000) — — Non-operating and administrative expenses (143,202) (104,572) (83,515) Depreciation of corporate assets and amortization (57,469) (27,129) (7,518) Operating income 59,360 46,134 87,781 Other expense, net (5,618) (254) (642) Interest expense, net (26,603) (16,976) (4,041) Income before taxes and equity in net income of associated companies $ 27,139 $ 28,904 $ 83,098 The following tables present information regarding the Company’s reportable segments’ assets and long-lived assets, including certain identifiable assets as well as an allocation of shared assets, of December 31, 2020, 2019 and 2018: 2020 2019 2018 Segment assets Americas $ 969,551 $ 926,122 $ 180,037 EMEA 697,821 688,663 149,984 Asia/Pacific 713,004 685,476 205,424 Global Specialty Businesses 511,458 550,055 174,220 Total segment assets $ 2,891,834 $ 2,850,316 $ 709,665 2020 2019 2018 Segment long-lived assets Americas $ 122,302 $ 139,170 $ 60,745 EMEA 69,344 56,108 23,383 Asia/Pacific 119,233 126,166 26,217 Global Specialty Businesses 59,091 69,184 26,949 Total segment long-lived assets $ 369,970 $ 390,628 $ 137,294 The following tables present information regarding the Company’s reportable segments’ capital expenditures and depreciation for identifiable assets for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Capital expenditures Americas $ 6,451 $ 6,404 $ 3,401 EMEA 3,844 3,263 2,081 Asia/Pacific 5,688 3,857 6,059 Global Specialty Businesses 1,918 2,021 1,345 Total segment capital expenditures $ 17,901 $ 15,545 $ 12,886 2020 2019 2018 Depreciation Americas $ 12,322 $ 7,500 $ 4,225 EMEA 6,813 4,560 3,434 Asia/Pacific 4,672 3,458 2,552 Global Specialty Businesses 3,544 2,248 1,985 Total segment depreciation $ 27,351 $ 17,766 $ 12,196 During the years ended December 31, 2020, 2019 and 2018, the Company had approximately $963.2 million, $719.8 million and $534.6 million of net sales, respectively, attributable to non-U.S. operations. As of December 31, 2020, 2019 and 2018, the Company had approximately $176.6 million, $174.4 million and $60.8 million of long-lived assets, respectively, attributable to non-U.S. operations. Inter-segment revenue for the years ended December 31, 2020, 2019 and 2018 was $9.1 million, $7.3 million and $8.3 million for Americas, $22.0 million, $20.3 million and $21.9 million for EMEA, $0.6 million, $0.2 million and $0.5 million for Asia/Pacific and $4.7 million, $5.4 million and $5.3 million for Global Specialty Businesses, respectively. However, all inter-segment transactions have been eliminated from each reportable operating segment’s net sales and earnings for all periods presented in the above tables.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Net Sales and Revenue Recognition	12 Months Ended
Net Sales and Revenue Recognition	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue From Contract With Customer [TextBlock]	Note 5 – Net Sales and Revenue Recognition Business Description The Company develops, produces, and markets a broad range of formulated chemical specialty products and offers chemical management services (“Fluidcare”) for various heavy industrial and manufacturing applications throughout its four segments. The Combination increased the Company’s addressable metalworking, metals and industrial end markets, including steel, aluminum, aerospace, defense, transportation-OEM, transportation-components, offshore sub-sea energy, architectural aluminum, construction, tube and pipe, can and container, mining, specialty coatings and specialty greases. The Combination also strengthened the product portfolio of the combined Company. The major product lines of Quaker Houghton include metal removal fluids, cleaning fluids, corrosion inhibitors, metal drawing and forming fluids, die cast mold releases, heat treatment and quenchants, metal forging fluids, hydraulic fluids, specialty greases, offshore sub-sea energy control fluids, rolling lubricants, rod and wire drawing fluids and surface treatment chemicals. A substantial portion of the Company’s sales worldwide are made directly through its own employees and its Fluidcare programs, with the balance being handled through distributors and agents. The Company’s employees typic ally visit the plants of customers regularly, work on site, and, through training and experience, identify production needs, which can be resolved or otherwise addressed either by adapting the Company’s existing products or by applying new formulations developed in its laboratories. The specialty chemical industry comprises many companies similar in size to the Company, as well as companies larger and smaller than Quaker Houghton. The offerings of many of the Company’s competitors differ from those of Quaker Houghton; some offer a broad portfolio of fluids, including general lubricants, while others have a more specialized product range. All competitors provide different levels of technical services to individual customers. Competition in the industry is based primarily on the ability to provide products that meet the needs of the customer, render technical services and laboratory assistance to the customer and, to a lesser extent, on price. As part of the Company’s Fluidcare business, certain third-party product sales to customers are managed by the Company. Where the Company acts as a principal, revenues are recognized on a gross reporting basis at the selling price negotiated with its customers. Where the Company acts as an agent, revenue is recognized on a net reporting basis at the amount of the administrative fee earned by the Company for ordering the goods. In determining whether the Company is acting as a principal or an agent in each arrangement, the Company considers whether it is primarily responsible for the obligation to provide the specified good, has inventory risk before the specified good has been transferred to the customer and has discretion in establishing the prices for the specified goods. The Company transferred third-party products under arrangements resulting in net reporting of $ 42.5 million, $ 48.0 million and $ 47.1 million for the years ended December 31, 2020, 2019 and 2018, respectively. A significant portion of the Company’s revenues are realized from the sale of process fluids and services to manufacturers of steel, aluminum, automobiles, aircraft, industrial equipment, and durable goods, and, therefore, the Company is subject to the same business cycles as those experienced by these manufacturers and their customers. The Company’s financial performance is generally correlated to the volume of global production within the industries it serves, rather than discretely related to the financial performance of such industries. Furthermore, steel and aluminum customers typically have limited manufacturing locations compared to metalworking customers and generally use higher volumes of products at a single location. During the year ended December 31, 2020, the Company’s five largest customers (each composed of multiple subsidiaries or divisions with semiautonomous purchasing authority) accounted for approximately 10 % of consolidated net sales, with its largest customer accounting for approximately 3 % of consolidated net sales. Revenue Recognition Model The Company applies the FASB’s guidance on revenue recognition which requires the Company to recognize revenue in an amount that reflects the consideration to which the Company expects to be entitled in exchange for goods or services transferred to its customers. To do this, the Company applies the five-step model in the FASB’s guidance, which requires the Company to: (i) identify the contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the Company satisfies a performance obligation. The Company identifies a contract with a customer when a sales agreement indicates approval and commitment of the parties; identifies the rights of the parties; identifies the payment terms; has commercial substance; and it is probable that the Company will collect the consideration to which it will be entitled in exchange for the goods or services that will be transferr ed to the customer. In most instances, the Company’s contract with a customer is the customer’s purchase order. For certain customers, the Company may also enter into a sales agreement which outlines a framework of terms and conditions which apply to all future and subsequent purchase orders for that customer. In these situations, the Company’s contract with the customer is both the sales agreement as well as the specific customer purchase order. Because the Company’s contract with a customer is typically for a single transaction or customer purchase order, the duration of the contract is almost always one year or less. As a result, the Company has elected to apply certain practical expedients and omit certain disclosures of remaining performance obligations for contracts that have an initial term of one year or less as permitted by the FASB. The Company identifies a performance obligation in a contract for each promised good or service that is separately identifiable from other obligations in the contract and for which the customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer. The Company determines the transaction price as the amount of consideration it expects to be entitled to in exchange for fulfilling the performance obligations, including the effects of any variable consideration, significant financing elements, amounts payable to the customer or noncash consideration. For any contracts that have more than one performance obligation, the Company allocates the transaction price to each performance obligation in an amount that depicts the amount of consideration to which the Company expects to be entitled in exchange for satisfying each performance obligation. In accordance with the last step of the FASB’s guidance, the Company recognizes revenue when, or as, it satisfies the performance obligation in a contract by transferring control of a promised good or providing the service to the customer. The Company recognizes revenue over time as the customer receives and consumes the benefits provided by the Company’s performance; the Company’s performance creates or enhances an asset that the customer controls as the asset is created or enhanced; or the Company’s performance does not create an asset with an alternative use to the entity, and the entity has an enforceable right to payment, including a profit margin, for performance completed to date. For performance obligations not satisfied over time, the Company determines the point in time at which a customer obtains control of an asset and the Company satisfies a performance obligation by considering when the Company has a right to payment for the asset; the customer has legal title to the asset; the Company has transferred physical possession of the asset; the customer has the significant risks and rewards of ownership of the asset; or the customer has accepted the asset. The Company typically satisfies its performance obligations and recognizes revenue at a point in time for product sales, generally when products are shipped or delivered to the customer, depending on the terms underlying each arrangement. In circumstances where the Company’s products are on consignment, revenue is generally recognized upon usage or consumption by the customer. For any Fluidcare or other services provided by the Company to the customer, the Company typically satisfies its performance obligations and recognizes revenue over time, as the promised services are performed. The Company uses input methods to recognize revenue over time related to these services, including labor costs and time incurred. The Company believes that these input methods represent the most indicative measure of the Fluidcare or other service work performed by the Company. Other Considerations The Company does not have standard payment terms for all customers, however the Company’s general payment terms require customers to pay for products or services provided after the performance obligation is satisfied. The Company does not have significant financing arrangements with its customers. The Company does not have significant amounts of variable consideration in its contracts with customers and where applicable, the Company’s estimates of variable consideration are not constrained. The Company records certain third-party license fees in other income (expense), net, in its Consolidated Statement of Income, which generally include sales-based royalties in exchange for the license of intellectual property. These license fees are recognized in accordance with their agreed-upon terms and when performance obligations are satisfied, which is generally when the third party has a subsequent sale. Practical Expedients and Accounting Policy Elections The Company has made certain accounting policy elections and elected to use certain practical expedients as permitted by the FASB in applying the guidance on revenue recognition. The Company does not adjust the promised amount of consideration for the effects of a significant financing compon ent as the Company expects, at contract inception, that the period between when the Company transfers a promised good or service to the customer and when the customer pays for that good or service will be one year or less. In addition, the Company expenses costs to obtain a contract as incurred when the expected period of benefit, and therefore the amortization period, is one year or less. In addition, the Company excludes from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the entity from a customer, including sales, use, value added, excise and various other taxes. Lastly, the Company has elected to account for shipping and handling activities that occur after the customer has obtained control of a good as a fulfilment cost, rather than an additional promised service. Contract Assets and Liabilities The Company recognizes a contract asset or receivable on its Consolidated Balance Sheet when the Company performs a service or transfers a good in advance of receiving consideration. A receivable is the Company’s right to consideration that is unconditional and only the passage of time is required before payment of that consideration is due. A contract asset is the Company’s right to consideration in exchange for goods or services that the Company has transferred to a customer. The Company had no material contract assets recorded on its Consolidated Balance Sheets as of December 31, 2020 and 2019. A contract liability is recognized when the Company receives consideration, or if it has the unconditional right to receive consideration, in advance of performance. A contract liability is the Company’s obligation to transfer goods or services to a customer for which the Company has received consideration, or a specified amount of consideration is due, from the customer. The Company’s contract liabilities primarily represent deferred revenue recorded for customer payments received by the Company prior to the Company satisfying the associated performance obligation. The Company acquired and recorded an immaterial amount of deferred revenue as of the respective opening balance sheet dates related to the Combination and Norman Hay acquisition. Deferred revenues are presented within other accrued liabilities in the Company’s Consolidated Balance Sheets. The Company had approximately $ 4.0 million and $ 2.2 million of deferred revenue as of December 31, 2020 and 2019, respectively. During the years ended December 31, 2020 and 2019, respectively, the Company satisfied all of the associated performance obligations and recognized into revenue the advance payments received and recorded as of December 31, 2020, 2019 and 2018, respectively. Disaggregated Revenue The Company sells its various industrial process fluids, its specialty chemicals and its technical expertise as a global product portfolio. The Company generally manages and evaluates its performance by segment first, and then by customer industry, rather than by individual product lines. Also, net sales of each of the Company’s major product lines are generally spread throughout all three of the Company’s geographic regions, and in most cases, approximately proportionate to the level of total sales in each region. The following tables present disaggregated information regarding the Company’s net sales, first by major product lines that represent more than 10% of the Company’s consolidated net sales for any of the years ended December 31, 2020, 2019 and 2018, and followed then by a disaggregation of the Company’s net sales by segment, geographic region, customer industry, and timing of revenue recognized for the years ended December 31, 2020, 2019 and 2018. 2020 2019 2018 Metal removal fluids 23.9 % 19.9 % 15.4 % Rolling lubricants 21.8 % 21.9 % 25.5 % Hydraulic fluids 13.3 % 13.0 % 13.0 % Net sales for the year ending December 31, 2020 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 163,135 $ 107,880 $ 168,096 $ 439,111 Metalworking and other 287,026 275,307 147,203 709,536 450,161 383,187 315,299 1,148,647 Global Specialty Businesses 154,796 68,164 46,070 269,030 $ 604,957 $ 451,351 $ 361,369 $ 1,417,677 Timing of Revenue Recognized Product sales at a point in time $ 580,663 $ 434,549 $ 352,917 $ 1,368,129 Services transferred over time 24,294 16,802 8,452 49,548 $ 604,957 $ 451,351 $ 361,369 $ 1,417,677 Net sales for the year ending December 31, 2019 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 171,784 $ 100,605 $ 141,870 $ 414,259 Metalworking and other 220,337 184,965 105,969 511,271 392,121 285,570 247,839 925,530 Global Specialty Businesses 149,428 30,115 28,430 207,973 $ 541,549 $ 315,685 $ 276,269 $ 1,133,503 Timing of Revenue Recognized Product sales at a point in time $ 525,802 $ 310,274 $ 269,228 $ 1,105,304 Services transferred over time 15,747 5,411 7,041 28,199 $ 541,549 $ 315,685 $ 276,269 $ 1,133,503 Net sales for the year ending December 31, 2018 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 164,263 $ 101,028 $ 120,627 $ 385,918 Metalworking and other 133,338 115,956 71,875 321,169 297,601 216,984 192,502 707,087 Global Specialty Businesses 122,165 16,613 21,655 160,433 $ 419,766 $ 233,597 $ 214,157 $ 867,520 Timing of Revenue Recognized Product sales at a point in time $ 408,402 $ 233,372 $ 206,112 $ 847,886 Services transferred over time 11,364 225 8,045 19,634 $ 419,766 $ 233,597 $ 214,157 $ 867,520

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Leases	12 Months Ended
Leases	Dec. 31, 2020
Leases [Abstract]
Leases Of Lessee Disclosure [TextBlock]	Note 6 – Leases As previously disclosed in the Company’s 2019 Form 10-K, during 2019, the Company adopted, as required, an accounting standard update regarding the accounting and disclosure for leases which changed the manner in which it accounts for leases effective January 1, 2019. The Company determines if an arrangement is a lease at its inception. This determination generally depends on whether the arrangement conveys the right to control the use of an identified fixed asset explicitly or implicitly for a period of time in exchange for consideration. Control of an underlying asset is conveyed if the Company obtains the rights to direct the use of, and obtains substantially all of the economic benefits from the use of, the underlying asset. Lease expense for variable leases and short- term leases is recognized when the obligation is incurred. The Company has operating leases for certain facilities, vehicles and machinery and equipment with remaining lease terms up to 11 years. In addition, the Company has certain land use leases with remaining lease terms up to 95 years. The lease term for all of the Company’s leases includes the non-cancellable period of the lease plus any additional periods covered by an option to extend the lease that the Company is reasonably certain it will exercise. Operating leases are included in right of use lease assets , other current liabilities and long-term lease liabilities on the Consolidated Balance Sheet. Right of use lease assets and liabilities are recognized at each lease’s commencement date based on the present value of its lease payments over its respective lease term. The Company uses the stated borrowing rate for a lease when readily determinable. When a stated borrowing rate is not available in a lease agreement, the Company uses its incremental borrowing rate based on information available at the lease’s commencement date to determine the present value of its lease payments. In determining the incremental borrowing rate used to present value each of its leases, the Company considers certain information including fully secured borrowing rates readily available to the Company and its subsidiaries. The Company has immaterial finance leases, which are included in PP&E, current portion of long-term debt and long-term debt on the Consolidated Balance Sheet. Operating lease expense is recognized on a straight-line basis over the lease term. Operating lease expense for the years ended December 31, 2020 and 2019 was $ 14.2 million and $ 9.4 million, respectively. Short-term lease expense for the years ended December 31, 2020 and 2019 was $ 1.3 million and $ 1.5 million, respectively. The Company has no material variable lease costs or sublease income for the years ended December 31, 2020 and 2019. Cash paid for operating leases during the years ended December 31, 2020 and 2019 was $ 14.1 million and $ 9.2 million, respectively. The Company recorded new right of use lease assets and associated lease liabilities of $ 6.9 million during the year ended December 31, 2020. Supplemental balance sheet information related to the Company’s leases is as follows: December 31, December 31, 2020 2019 Right of use lease assets $ 38,507 $ 42,905 Other accrued liabilities 10,901 11,177 Long-term lease liabilities 27,070 31,273 Total operating lease liabilities $ 37,971 $ 42,450 Weighted average remaining lease term (years) 6.0 6.2 Weighted average discount rate 4.20% 4.21% Maturities of operating lease liabilities as of December 31, 2020 were as follows: December 31, 2020 For the year ended December 31, 2021 $ 12,342 For the year ended December 31, 2022 8,395 For the year ended December 31, 2023 6,220 For the year ended December 31, 2024 4,610 For the year ended December 31, 2025 3,836 For the year ended December 31, 2026 and beyond 8,141 Total lease payments 43,544 Less: imputed interest (5,573) Present value of lease liabilities $ 37,971

Restructuring and Related Activities	12 Months Ended
Restructuring and Related Activities	Dec. 31, 2020
Restructuring And Related Activities [Abstract]
Restructuring And Related Activities Disclosure [Text Block]	Note 7 – Restructuring and Related Activities The Company’s management approved a global restructuring plan (the “QH Program”) as part of its plan to realize certain cost synergies associated with the Combination in the third quarter of 2019. The QH Program includes restructuring and associated severance costs to reduce total headcount by approximately 350 people globally, as well as plans for the closure of certain manufacturing and non-manufacturing facilities. The exact timing and total costs associated with the QH Program will depend on a number of factors and is subject to change; however, the Company currently expects reduction in headcount and site closures to continue to occur into 2021 under the QH Program and estimates that anticipated cost synergies realized from the QH Program will approximate one-times the restructuring costs incurred. Employee separation benefits will vary depending on local regulations within certain foreign countries and will include severance and other benefits. All costs incurred to date relate to severance costs to reduce headcount as well as costs to close certain facilities and are recorded in restructuring and related charges in the Company’s Consolidated Statements of Income. As described in Note 4 of Notes to Consolidated Financial Statements, restructuring and related charges are not included in the Company’s calculation of reportable segments’ measure of operating earnings and therefore these costs are not reviewed by or recorded to reportable segments. Activity in the Company’s accrual for restructuring under the QH Program for the years ended December 31, 2020 and 2019 is as follows: QH Program Accrued restructuring as of December 31, 2018 $ - Restructuring and related charges 26,678 Cash payments (8,899) Currency translation adjustments 264 Accrued restructuring as of December 31, 2019 18,043 Restructuring and related charges 5,541 Cash payments (15,745) Currency translation adjustments 409 Accrued restructuring as of December 31, 2020 $ 8,248 In connection with the plans for closure of certain manufacturing and non-manufacturing facilities, the Company made a decision to make available for sale certain facilities. During the fourth quarter of 2020, certain of these facilities were sold and the Company recognized a loss on disposal of approximately $ 0.6 million included within other expense, net on the Consolidated Statement of Income. Additionally, certain buildings and land with an aggregate book value of approximately $ 10.0 million continues to be held- for-sale as of December 31, 2020 and are recorded in other current assets on the Company’s Consolidated Balance Sheet.

Share-Based Compensation	12 Months Ended
Share-Based Compensation	Dec. 31, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 8 – Share-Based Compensation The Company recognized the following share-based compensation expense in its Consolidated Statements of Income for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Stock options $ 1,491 $ 1,448 $ 1,053 Non-vested stock awards and restricted stock units 5,012 3,206 2,459 Non-elective and elective 401(k) matching contribution in stock 3,112 — — Employee stock purchase plan — 84 89 Director stock ownership plan 541 123 123 Performance stock units 840 — — Annual incentive plan (1) — — — Total share-based compensation expense $ 10,996 $ 4,861 $ 3,724 (1) Refer to the section entitled Annual Incentive Plan below for additional information. Share-based compensation expense is recorded in SG&A, except for $ 1.5 million, $ 0.9 million and $ 0.1 million during the years ended December 31, 2020, 2019 and 2018, respectively, recorded within Combination, integration and other acquisition-related expenses. The increase in total share-based compensation expense for the year ended December 31, 2020 includes performance stock units and non-elective and elective 401(k) matching contributions in stock as components of share-based compensation beginning in 2020, described further below. Stock Options Stock option activity under all plans is as follows: Weighted Weighted Average Average Exercise Remaining Aggregate Number of Price Contractual Intrinsic Options (per option) Term (years) Value Options outstanding as of January 1, 2020 144,412 $ 137.15 Options granted 49,115 136.64 Options exercised (83,191) 128.42 Options outstanding as of December 31, 2020 110,336 $ 143.51 5.2 $ 12,015 Options expected to vest after December 31, 2020 92,890 $ 144.86 5.6 $ 9,990 Options exercisable as of December 31, 2020 17,446 $ 136.32 3.4 $ 2,025 The total intrinsic value of options exercised during the years ended December 31, 2020, 2019 and 2018 was approximately $6.5 million, $2.5 million and $2.0 million, respectively. Intrinsic value is calculated as the difference between the current market price of the underlying security and the strike price of a related option. A summary of the Company’s outstanding stock options as of December 31, 2020 is as follows: Weighted Average Weighted Weighted Number Remaining Average Number Average Range of of Options Contractual Exercise Price of Options Exercise Price Exercise Prices Outstanding Term (years) (per option) Exercisable (per option) $ 70.01 - $ 80.00 2,133 1.0 $ 72.12 2,133 $ 72.12 $ 80.01 - $ 90.00 1,309 1.0 87.30 1,309 87.30 $ 90.01 - $ 130.00 — — — — — $ 130.01 - $ 140.00 51,732 6.0 136.54 2,617 134.60 $ 140.01 - $ 150.00 — — — — — $ 150.01 - $ 160.00 55,162 4.8 154.14 11,387 154.37 110,336 5.2 143.51 17,446 136.32 As of December 31, 2020, unrecognized compensation expense related to options granted in 2020, 2019 and 2018 was $1.2 million, $0.3 million and less than $0.1 million, respectively, to be recognized over a weighted average period of 1.9 years. The Company granted stock options under its LTIP plan that are subject only to time vesting generally over a three-year period during 2020, 2019, 2018 and 2017. For the purposes of determining the fair value of stock option awards, the Company uses the Black-Scholes option pricing model and the assumptions set forth in the table below: 2020 2019 2018 2017 Number of stock options granted 49,115 51,610 35,842 42,477 Dividend yield 0.99 % 1.12 % 1.37 % 1.49 % Expected volatility 31.57 % 26.29 % 24.73 % 25.52 % Risk-free interest rate 0.36 % 1.52 % 2.54 % 1.67 % Expected term (years) 4.0 4.0 4.0 4.0 The fair value of these options is being amortized on a straight-line basis over the respective vesting period of each award. The compensation expense recorded on each award during the years ended December 31, 2020, 2019 and 2018, respectively, is as follows: 2020 2019 2018 2020 Stock option awards $ 385 $ — $ — 2019 Stock option awards 698 665 — 2018 Stock option awards 357 364 310 2017 Stock option awards 51 369 367 Restricted Stock Awards Activity of non-vested restricted stock awards granted under the Company’s LTIP plan is shown below: Number of Weighted Average Grant Shares Date Fair Value (per share) Nonvested awards, December 31, 2019 64,500 $ 152.67 Granted 28,244 145.63 Vested (19,195) 148.15 Forfeited (1,781) 150.27 Nonvested awards, December 31, 2020 71,768 $ 151.17 The fair value of the non-vested stock is based on the trading price of the Company’s common stock on the date of grant. The Company adjusts the grant date fair value for expected forfeitures based on historical experience for similar awards. As of December 31, 2020, unrecognized compensation expense related to these awards was $4.7 million, to be recognized over a weighted average remaining period of 1.6 years. Restricted Stock Units Activity of non-vested restricted stock units granted under the Company’s LTIP plan is shown below: Number of Weighted Average Grant Units Date Fair Value (per unit) Nonvested awards, December 31, 2019 8,655 $ 152.09 Granted 6,030 141.65 Vested (1,791) 141.92 Forfeited (2,049) 153.50 Nonvested awards, December 31, 2020 10,845 $ 147.70 The fair value of the non-vested restricted stock units is based on the trading price of the Company’s common stock on the date of grant. The Company adjusts the grant date fair value for expected forfeitures based on historical experience for similar awards. As of December 31, 2020, unrecognized compensation expense related to these awards was $0.8 million, to be recognized over a weighted average remaining period of 2.0 years. Performance Stock Units In March 2020, the Company included performance -dependent stock awards (“PSUs”) as a component of its LTIP, which will be settled in a certain number of shares subject to market -based and time-based vesting conditions. The number of fully vested shares that may ultimately be issued as settlement for each award may range from 0 % up to 200 % of the target award, subject to the achievement of the Company’s total shareholder return (“TSR”) relative to the performance of the Company’s peer group, the S&P Midcap 400 Materials group. The service period required for the PSUs is three years and the TSR measurement period for the PSUs is from January 1, 2020 through December 31, 2022. Compensation expense for PSUs is measured based on their grant date fair value and is recognized on a straight-line basis over the three-year vesting period. The grant-date fair value of the PSUs was estimated using a Monte Carlo simulation on the grant date and using the following assumptions: (i) a risk-free rate of 0.28 %; (ii) an expected term of 3.0 years; and (iii) a three-year daily historical volatility for each of the companies in the peer group, including Quaker Houghton. As of December 31, 2020, the Company estimates that it will issue approximately 20,000 fully vested shares as of the settlement date of the award based on the conditions of the PSUs and Company’s closing stock price on December 31, 2020. As of December 31, 2020, there was approximately $ 2.5 million of total unrecognized compensation cost related to PSUs which the Company expects to recognize over a weighted-average period of 2.2 years. Annual Incentive Plan The Company maintains an Annual Incentive Plan (“AIP”), which may be settled in cash or a certain number of shares subject to performance-based and time-based vesting conditions. As previously disclosed within the Company’s Form 10-Q for the first three quarters of 2020, it was the Company’s intention at that time to settle the 2020 AIP in shares, and therefore, expense associated with the AIP in 2020 was recorded as a component of share -based compensation expense during the first nine months of 2020. In the fourth quarter of 2020, the Company determined that it would settle the current year AIP in cash. Therefore, the share- based compensation associated with the AIP during the year ended December 31, 2020 was reclassified from a component of share- based compensation expense to incentive compensation. This determination and conclusion had no impact on the classification of AIP expense within the Company’s Consolidated Statement of Income for the year ended December 31, 2020 as both are a component of SG&A. As a result of the change, there was an immaterial impact on the Company’s calculation of diluted earnings per share for the year ended December 31, 2020 as the Company no longer considers the estimated number of shares related to a hypothetical AIP settlement in shares as a component of its diluted earnings per share calculation. In addition, there was no impact on the Company’s Consolidated Balance Sheet as of December 31, 2020, as the AIP was and continues to be classified as a liability and included within accrued compensation. Similarly, there was a reclassification on the Company’s Consolidated Statement of Cash Flow between lines within Net cash provided by operating activities in the fourth quarter of 2020. The expected cash flow impact of the AIP settled in cash is presented as a component of accounts payable and accrued liabilities for the year ended December 31, 2020. Defined Contribution Plan The Company has a 401(k) plan with an employer match covering a majority of its U.S. employees. The Company matches 50 % of the first 6 % of compensation that is contributed to the plan, with a maximum matching contribution of 3 % of compensation. Additionally, the plan provides for non-elective nondiscretionary contributions on behalf of participants who have completed one year of service equal to 3 % of the eligible participant's compensation. The Company’s matching contributions and non-elective contributions may be made in cash or in fully vested shares of the Company’s common stock. Beginning in April 2020, the Company began matching both non-elective and elective 401(k) contributions in fully vested shares of its common stock rather than cash. For the year ended December 31, 2020, total contributions were $ 3.1 million. Employee Stock Purchase Plan In 2000, the Board adopted an Employee Stock Purchase Plan (“ESPP”) whereby employees may purchase Company stock through a payroll deduction plan. Purchases were made from the plan and credited to each participant’s account on the last day of each calendar month in which the organized securities trading markets in the U.S. were open for business (the “Investment Date”). The purchase price of the stock was 85 % of the fair market value on the Investment Date. The plan was compensatory, and the 15 % discount was expensed on the Investment Date. All employees, including officers, were eligible to participate in this plan. A participant could withdraw all uninvested payment balances credited to a participant’s account at any time. An employee whose stock ownership of the Company exceeds five percent of the outstanding common stock was not eligible to participate in this plan. Effective January 1, 2020, the Company discontinued the ESPP. 2013 Director Stock Ownership Plan In 2013, the Company adopted the 2013 Director Stock Ownership Plan (the “Plan”), to encourage the Directors to increase their investment in the Company, which was approved at the Company’s May 2013 shareholders’ meeting. The Plan authorizes the issuance of up to 75,000 shares of Quaker common stock in accordance with the terms of the Plan in payment of all or a portion of the annual cash retainer payable to each of the Company’s non-employee directors in 2013 and subsequent years during the term of the Plan. Under the Plan, each director who, on May 1 of the applicable calendar year, owns less than 400 % of the annual cash retainer for the applicable calendar year, divided by the average of the closing price of a share of Quaker Common Stock as reported by the composite tape of the New York Stock Exchange for the previous calendar year (the “Threshold Amount”), is required to receive 75 % of the annual cash retainer in Quaker common stock and 25 % of the retainer in cash, unless the director elects to receive a greater percentage of Quaker common stock, up to 100 % of the annual cash retainer for the applicable year. Each director who owns more than the Threshold Amount may elect to receive common stock in payment of a percentage (up to 100 %) of the annual cash retainer. The annual retainer is $ 0.1 million and the retainer payment date is June 1.

Other Income (Expense)	12 Months Ended
Other Income (Expense)	Dec. 31, 2020
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	Note 9 – Other Expense, net Other expense, net, for the years ended December 31, 2020, 2019 and 2018 are as follows: 2020 2019 2018 Income from third party license fees $ 999 $ 1,035 $ 862 Foreign exchange (losses) gains, net (6,082) 223 (807) (Loss) gain on fixed asset disposals, net (871) 58 657 Non-income tax refunds and other related credits 3,345 1,118 668 Pension and postretirement benefit costs, non-service components (21,592) (2,805) (2,285) Gain on changes in insurance settlement restrictions of an inactive subsidiary and related insurance insolvency recovery 18,144 60 90 Other non-operating income, net 439 57 173 Total other expense, net $ (5,618) $ (254) $ (642) Pension and postretirement benefit costs, non-service components during the year ended December 31, 2020 include a $ 1.6 million refund in premium and a $ 22.7 million non-cash settlement charge related to the Legacy Quaker U.S. Pension Plan, as described in Note 21 of Notes to Consolidated Financial Statements. Gain on changes in insurance restrictions of an inactive subsidiary and related insurance insolvency recovery relate to the termination of restrictions over certain cash that was previously designated solely to be used for settlement of asbestos claims at an inactive subsidiary of the Company and cash proceeds from an insolvent insurance carrier with respect to previously filed recovery claims. See Note 12, Note 19 and Note 26 of Notes to Consolidated Financial Statements. Foreign exchange (losses) gains, net, during the years ended December 31, 2020, 2019 and 2018, include foreign currency transaction losses of approximately $ 0.4 million, $ 1.0 million and $ 0.4 million, respectively, related to hyper-inflationary accounting for the Company’s Argentine subsidiaries, and specific to 2018, a foreign currency transaction gain of approximately $ 0.4 million related to the liquidation of an inactive legal entity. See Note 1 of Notes to Consolidated Financial Statements. (Loss) gain on fixed asset disposals, net, during the year ended December 31, 2020 and 2018, included $ 0.6 million loss and a $ 0.6 million gain, respectively, on the sale of held-for-sale assets related to the Combination.

Taxes on Income	12 Months Ended
Taxes on Income	Dec. 31, 2020
Taxes on Income and Uncertain Tax Positions [Abstract]
Taxes on Income [Text Block]	Note 10 – Taxes on Income On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as U.S. Tax Reform. U.S. Tax Reform implemented a new system of taxation for non-U.S. earnings which eliminated U.S. federal income taxes on dividends from certain foreign subsidiaries and imposed a one-time transition tax on the deemed repatriation of undistributed earnings of certain foreign subsidiaries that is payable over eight years. Following numerous regulations, notices, and other formal guidance published by the Internal Revenue Service (“I.R.S.”), U.S. Department of Treasury, and various state taxing authorities, the Company has completed its accounting for the transition tax and has elected to pay its $ 15.5 million transition tax in installments over eight years as permitted under U.S. Tax Reform. As of December 31, 2020, $ 7.0 million in installments have been paid with the remaining $ 8.5 million to be paid through installments in future years. As of December 31, 2020, the Company has a deferred tax liability of $ 5.9 million on certain undistributed foreign earnings, which primarily represents the Company’s estimate of the non-U.S. income taxes the Company will incur to ultimately remit certain earnings to the U.S. The Company’s reinvestment assertions are further explained below. Taxes on income before equity in net income of associated companies for the years ended December 31, 2020, 2019 and 2018 are as follows: 2020 2019 2018 Current: Federal $ (1,359) $ (239) $ 6,583 State 1,171 352 (1,844) Foreign 33,173 26,213 12,114 32,985 26,326 16,853 Deferred: Federal (28,437) (9,267) 7,859 State (3,087) (396) (173) Foreign (6,757) (14,579) 511 Total $ (5,296) $ 2,084 $ 25,050 The components of earnings before income taxes for the years ended December 31, 2020, 2019 and 2018 are as follows: 2020 2019 2018 U.S. $ (66,585) $ (46,697) $ 27,387 Foreign 93,724 75,601 55,711 Total $ 27,139 $ 28,904 $ 83,098 Total deferred tax assets and liabilities are composed of the following as of December 31, 2020 and 2019: 2020 2019 Retirement benefits $ 15,237 $ 15,142 Allowance for doubtful accounts 2,316 2,253 Insurance and litigation reserves 842 1,002 Performance incentives 5,914 7,213 Equity-based compensation 1,282 1,050 Prepaid expense 756 2,976 Insurance settlement — 3,895 Operating loss carryforward 16,693 16,044 Foreign tax credit and other credits 24,873 34,384 Interest 16,812 11,479 Restructuring reserves 1,121 2,167 Right of use lease assets 9,346 10,015 Royalties and license fees — 2,156 Inventory reserves 2,225 2,163 Research and development 7,974 2,580 Other 3,005 1,317 108,396 115,836 Valuation allowance (21,511) (13,834) Total deferred tax assets, net $ 86,885 $ 102,002 Depreciation 15,473 17,754 Foreign pension and other 1,807 1,269 Amortization and other 222,794 254,359 Lease liabilities 9,151 9,965 Outside basis in equity investment 7,938 6,776 Unremitted Earnings 5,919 8,228 Total deferred tax liabilities $ 263,082 $ 298,351 The Company has $ 11.3 million of deferred tax assets related to state net operating losses. A partial valuation allowance of $ 8.0 million has been established against this amount resulting in a net $ 3.3 million expected future benefit. Management analyzed the expected impact of the reversal of existing taxable temporary differences, considered expiration dates, analyzed current state tax laws, and determined that $ 3.3 million of state net operating loss carryforwards will be realized based on the reversal of deferred tax liabilities. These state net operating losses are subject to various carryforward periods of 5 years to 20 years or an indefinite carryforward period. An additional $ 1.0 million of valuation allowance was established for other net state deferred tax assets. The Company has $ 5.4 million of deferred tax assets related to foreign net operating loss carryforwards. A partial valuation allowance of $ 1.7 million has been established against the $ 5.4 million due to the expected expiration of these losses before they are able to be utilized. These foreign net operating losses are subject to various carryforward periods with the majority having an indefinite carryforward period. An additional partial valuation allowance of $ 0.6 million has been established against certain other foreign deferred tax assets. In conjunction with the Combination, the Company acquired foreign tax credit deferred tax assets of $ 41.8 million expiring between 2019 and 2028. Foreign tax credits may be carried forward for 10 years. As of December 31, 2019, the foreign tax credit carry forward was $ 33.7 million with an $ 8.2 million valuation allowance recorded against the deferred tax asset. Management analyzed the expected impact of the utilization of foreign tax credits based on certain assumptions such as projected U.S. taxable income, overall domestic loss recapture, and annual limitations due to the ownership change under the Internal Revenue Code. Consequently, as of December 31, 2020, the foreign tax credit carry forward was $ 24.9 million with a $ 10.2 million valuation allowance reflecting the amount of credits that are not expected to be utilized before expiration. The Company also acquired disallowed interest deferred tax assets of $ 14.0 million as part of the Combination. Disallowed interest may be carried forward indefinitely. Management analyzed the expected impact of the utilization of disallowed interest carryforwards based on projected US taxable income and determined that the Company will utilize all expected future benefits by 2022. As of December 31, 2020, the Company had a net realizable disallowed interest carryforward of $ 15.7 million on its balance sheet. As of December 31, 2020, the Company had deferred tax liabilities of $ 222.8 million primarily related to the step-up in intangibles resulting from the Combination and Norman Hay acquisition. As part of the Combination, the Company acquired a 50 % interest in the Korea Houghton Corporation joint venture and has recorded a $ 7.9 million deferred tax liability for its outside basis difference. The following are the changes in the Company’s deferred tax asset valuation allowance for the years ended December 31, 2020, 2019 and 2018: Effect of Balance at Purchase Additional Allowance Exchange Balance Beginning Accounting Valuation Utilization Rate at End of Period Adjustments Allowance and Other Changes of Period Valuation Allowance Year ended December 31, 2020 $ 13,834 $ 7,148 $ 2,738 $ (2,153) $ (56) $ 21,511 Year ended December 31, 2019 $ 7,520 $ 13,752 $ 832 $ (8,227) $ (43) $ 13,834 Year ended December 31, 2018 $ 7,401 $ — $ 650 $ (471) $ (60) $ 7,520 The Company’s net deferred tax assets and liabilities are classified in the Consolidated Balance Sheets as of December 31, 2020 and 2019 as follows: 2020 2019 Non-current deferred tax assets $ 16,566 $ 14,745 Non-current deferred tax liabilities 192,763 211,094 Net deferred tax liability $ (176,197) $ (196,349) The following is a reconciliation of income taxes at the Federal statutory rate with income taxes recorded by the Company for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Income tax provision at the Federal statutory tax rate $ 5,699 $ 6,070 $ 17,458 Unremitted earnings (2,308) (4,383) 7,857 Tax law changes / reform (1,059) (416) (3,118) Sub part F / Global intangible low taxed income 5,140 574 2,095 Pension settlement (2,247) — — Foreign derived intangible income (7,339) (1,699) (1,034) Non-deductible acquisition expenses 131 1,743 1,019 Withholding taxes 7,809 8,621 1,161 Foreign tax credits (4,699) (3,787) (1,911) Share-based compensation 335 (540) 259 Foreign tax rate differential 596 920 1,081 Research and development credit (475) (306) (230) Uncertain tax positions 1,990 899 (79) State income tax provisions, net (2,245) (117) 196 Non-deductible meals and entertainment 290 318 415 Intercompany transfer of intangible assets (4,384) (5,318) — Miscellaneous items, net (2,530) (495) (119) Taxes on income before equity in net income of associated companies $ (5,296) $ 2,084 $ 25,050 Pursuant to U.S. Tax Reform, the Company recorded a $ 15.5 million transition tax liability for U.S. income taxes on the undistributed earnings of non-U.S. subsidiaries. However, the Company may also be subject to other taxes, such as withholding taxes and dividend distribution taxes, if these undistributed earnings are ultimately remitted to the U.S. As a result of the Combination, additional third-party debt was incurred resulting in the Company re-evaluating its global cash strategy in order to meet its goal of reducing leverage in upcoming years. As of December 31, 2020, the Company has a deferred tax liability $ 5.9 million, which primarily represents the estimate of the non-U.S. taxes the Company will incur to ultimately remit these earnings to the U.S. It is the Company’s current inten tion to reinvest its additional undistributed earnings of non-U.S. subsidiaries to support working capital needs and certain other growth initiatives outside of the U.S. The amount of such undistributed earnings at December 31, 2020 was approximately $ 322.6 million. Any tax liability which might result from ultimate remittance of these earnings is expected to be substantially offset by foreign tax credits (subject to certain limitations). It is currently impractical to estimate any such incremental tax expense. As of December 31, 2020, the Company’s cumulative liability for gross unrecognized tax benefits was $ 22.2 million. The Company had accrued approximately $ 3.9 million for cumulative penalties and $ 3.0 million for cumulative interest as of December 31, 2020. As of December 31, 2019, the Company’s cumulative liability for gross unrecognized tax benefits was $ 19.1 million. The Company had accrued approximately $ 3.1 million for cumulative penalties and $ 2.3 million for cumulative interest as of December 31, 2019. The Company continues to recognize interest and penalties associated with uncertain tax positions as a component of tax expense on income before equity in net income of associated companies in its Consolidated Statements of Income. The Company recognized an expense of less than $ 0.1 million for penalties and $ 0.6 million for interest (net of expirations and settlements) in its Consolidated Statement of Income for the year ended December 31, 2020, a credit of $ 0.2 million for penalties and an expense of $ 0.2 million for interest (net of expirations and settlements) in its Consolidated Statement of Income for the year ended December 31, 2019, and a credit of $ 0.2 million for penalties and a credit of $ 0.1 million for interest (net of expirations and settlements) in its Consolidated Statement of Income for the year ended December 31, 2018. The Company estimates that during the year ending December 31, 2021, it will reduce its cumulative liability for gross unrecognized tax benefits by approximately $ 1.5 million due to the expiration of the statute of limitations with regard to certain tax positions. This estimated reduction in the cumulative liability for unrecognized tax benefits does not consider any increase in liability for unrecognized tax benefits with regard to existing tax positions or any increase in cumulative liability for unrecognized tax benefits with regard to new tax positions for the year ending December 31, 2021. A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended December 31, 2020, 2019 and 2018, respectively, is as follows: 2020 2019 2018 Unrecognized tax benefits as of January 1 $ 19,097 $ 7,050 $ 6,761 Increase (decrease) in unrecognized tax benefits taken in prior periods 2,025 (28) (183) Increase in unrecognized tax benefits taken in current period 3,095 1,935 2,023 Decrease in unrecognized tax benefits due to lapse of statute of limitations (3,659) (1,029) (1,292) Increase in unrecognized tax benefits due to acquisition 597 11,301 — Increase (decrease) due to foreign exchange rates 997 (132) (259) Unrecognized tax benefits as of December 31 $ 22,152 $ 19,097 $ 7,050 The amount of net unrecognized tax benefits above that, if recognized, would impact the Company’s tax expense and effective tax rate is $ 14.7 million, $ 13.3 million and $ 2.2 million for the years ended December 31, 2020, 2019 and 2018, respectively. The Company and its subsidiaries are subject to U.S. Federal income tax, as well as the income tax of various state and foreign tax jurisdictions. Tax years that remain subject to examination by major tax jurisdictions include Italy from 2006 , Brazil from 2011 , Mexico, the Netherlands and China from 2015 , Spain, Germany and the United Kingdom from 2016 , Canada and the U.S. from 2017 , India from fiscal year beginning April 1, 2018 and ending March 31, 2019, and various U.S. state tax jurisdictions from 2011 . As previously reported, the Italian tax authorities have assessed additional tax due from the Company’s subsidiary, Quaker Italia S.r.l., relating to the tax years 2007 through 2015. The Company filed for competent authority relief from these assessments under the Mutual Agreement Procedures (“MAP”) of the Organization for Economic Co-Operation and Development for all years except 2007. In 2020, the respective tax authorities in Italy, Spain, and Netherland reached agreement with respect to the MAP proceedings, which the Company has accepted. As a result, the Company has recorded an estimated tax liability of $ 0.9 million to finalize these proceedings, net of refunds expected to be received from the Spanish and Dutch tax authorities. As of December 31, 2020, the Company believes it has adequate reserves for uncertain tax positions with respect to these and all other audits. Houghton Italia, S.r.l is also currently involved in a corporate income tax audit with the Italian tax authorities covering tax years 2014 through 2018. As of December 31, 2020, the Company has a $ 5.8 million reserve for uncertain tax positions relating to matters related to this audit. Since this reserve relates to the tax periods prior to August 1, 2019, the tax liability was established through purchase accounting related to the Combination. The Company has also submitted an indemnification claim against funds held in escrow by Houghton’s former owners and as a result, a corresponding $ 5.8 million indemnification receivable has also been established through purchase accounting. Houghton Deutschland GmbH is also under audit by the German tax authorities for tax years 2015-2017. Based on preliminary audit findings, primarily related to transfer pricing, the Company has recorded a reserve for $ 0.9 million as of December 31, 2020. Of this amount, $ 0.8 million relates to tax periods prior to the Combination and therefore the Company has submitted an indemnification claim with Houghton’s former owners for any tax liabilities arising pre-Combination. As a result, a corresponding $ 0.8 million indemnification receivable has also been established to offset the $ 0.8 million tax liability.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Earnings Per Share	12 Months Ended
Earnings Per Share	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Note 11 – Earnings Per Share The following table summarizes earnings per share calculations for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Basic earnings per common share Net income attributable to Quaker Chemical Corporation $ 39,658 $ 31,622 $ 59,473 Less: income allocated to participating securities (148) (90) (253) Net income available to common shareholders $ 39,510 $ 31,532 $ 59,220 Basic weighted average common shares outstanding 17,719,792 15,126,928 13,268,047 Basic earnings per common share $ 2.23 $ 2.08 $ 4.46 Diluted earnings per common share Net income attributable to Quaker Chemical Corporation $ 39,658 $ 31,622 $ 59,473 Less: income allocated to participating securities (148) (90) (252) Net income available to common shareholders $ 39,510 $ 31,532 $ 59,221 Basic weighted average common shares outstanding 17,719,792 15,126,928 13,268,047 Effect of dilutive securities 31,087 36,243 36,685 Diluted weighted average common shares outstanding 17,750,879 15,163,171 13,304,732 Diluted earnings per common share $ 2.22 $ 2.08 $ 4.45 The Company’s calculation of earnings per diluted share attributable to Quaker Chemical Corporation common shareholders for the year ended December 31, 2019 was impacted by the variability of its reported earnings during the year and the approximately 4.3 million shares issued as a component of the consideration transferred in the Combination, comprising 24.5 % of the common stock of the Company immediately after the closing. Certain stock options and restricted stock units are not included in the diluted earnings per share calculation because the effect would have been anti-dilutive. The calculated amount of anti-diluted shares not included were 945 in 2020, 108 in 2019 and 1,808 in 2018.

Restricted Cash	12 Months Ended
Restricted Cash	Dec. 31, 2020
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Cash And Cash Equivalents Disclosure [Text Block]	Note 12 – Restricted Cash Prior to December 2020, the Company had restricted cash recorded in other assets related to proceeds from an inactive subsidiary of the Company which previously executed separate settlement and release agreements with two of its insurance carriers for an original total value of $35.0 million. The proceeds of both settlements were restricted and could only be used to pay claims and costs of defense associated with the subsidiary’s asbestos litigation. The proceeds of the settlement and release agreements were deposited into interest bearing accounts which earned less then $ 0.1 million and $ 0.2 million in the years ended December 31, 2020 and 2019, respectively, offset by $ 1.0 million and $ 0.8 million of net payments during 2020 and 2019, respectively. Due to the restricted nature of the proceeds, a corresponding deferred credit was established in other non-current liabilities for an equal and offsetting amount. During December 2020, the restrictions ended on these previously received insurance settlements and the Company transferred the cash into an operating account. In connection with the termination in restrictions, the Company recognized an $ 18.1 million gain on its Consolidated Statement of Income in Other expense, net, for the amount of previously restricted cash, net of the estimated liability to pay claims and associated with the inactive subsidiary’s asbestos litigation as of December 31, 2020. See Notes 18, 22 and 26 of Notes to Consolidated Financial Statements. The following table provides a reconciliation of cash, cash equivalents and restricted cash as December 31, 2020, 2019, 2018 and 2017: 2020 2019 2018 2017 Cash and cash equivalents $ 181,833 $ 123,524 $ 104,147 $ 89,879 Restricted cash included in other current assets 62 353 — — Restricted cash included in other assets — 19,678 20,278 21,171 Cash, cash equivalents and restricted cash $ 181,895 $ 143,555 $ 124,425 $ 111,050

Accounts Receivable and Allowance for Doubtful Accounts	12 Months Ended
Accounts Receivable and Allowance for Doubtful Accounts	Dec. 31, 2020
Accounts Receivable and Allowance for Doubtful Accounts [Abstract]
Accounts Receivable and Allowance for Doubtful Accounts [Text Block]	Note 13 – Accounts Receivable and Allowance for Doubtful Accounts As of December 31, 2020 and 2019, the Company had gross trade accounts receivable totaling $386.1 million and $387.7 million, respectively. The Company recognizes an allowance for credit losses, which represents the portion of the receivable that the Company does not expect to collect over its contractual life, considering past events and reasonable and supportable forecasts of future economic conditions. The Company estimates credit losses for trade receivables by aggregating similar customer types, because they tend to share similar credit risk characteristics. The Company’s allowance for credit losses on its trade accounts receivable is based on specific collectability facts and circumstances for each outstanding receivable and customer, the aging of outstanding receivables, and the associated collection risk the Company estimates for certain past due aging categories, and also, the general risk to all outstanding accounts receivable based on historical amounts determined to be uncollectible. Trade and other receivables are written off when there is no reasonable expectation of recovery. The following are changes in the allowance for doubtful accounts during the years ended December 31, 2020, 2019 and 2018: Exchange Rate Balance at Changes Write-Offs Changes Balance Beginning to Costs and Charged to and Other at End of Period Expenses Allowance Adjustments of Period Allowance for Doubtful Accounts Year ended December 31, 2020 $ 11,716 $ 3,582 $ (2,187) $ 34 $ 13,145 Year ended December 31, 2019 $ 5,187 $ 1,925 $ (322) $ 4,926 $ 11,716 Year ended December 31, 2018 $ 5,457 $ 493 $ (295) $ (468) $ 5,187 Included in exchange rate changes and other adjustments for the year ended December 31, 2019 are the allowance for doubtful accounts of $ 5.0 million related to the acquired receivables in connection with the Combination and Norman Hay acquisition. See Note 2 of Notes to Consolidated Financial Statements. Included in exchange rate changes and other adjustments for the year ended December 31, 2018 is a reclassification of $ 0.3 million to other assets related to certain customer receivables due greater than a year.

Inventories	12 Months Ended
Inventories	Dec. 31, 2020
Inventories [Abstract]
Inventories [Text Block]	Note 14 – Inventories Inventories, net, as of December 31, 2020 and 2019 were as follows: 2020 2019 Raw materials and supplies $ 86,148 $ 82,058 Work in process, finished goods and reserves 101,616 92,892 Total inventories, net $ 187,764 $ 174,950

Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Text Block]	Note 15 – Property, Plant and Equipment Property, plant and equipment as of December 31, 2020 and 2019 were as follows: 2020 2019 Land $ 33,009 $ 34,686 Building and improvements 135,595 130,462 Machinery and equipment 246,242 225,636 Construction in progress 8,407 8,050 Property, plant and equipment, at cost 423,253 398,834 Less: accumulated depreciation (219,370) (185,365) Total property, plant and equipment, net $ 203,883 $ 213,469 As of December 31, 2020, PP&E includes $ 0.4 million of finance lease assets and future minimum lease payments. In connection with the plans for closure of certain facilities, certain buildings and land with an aggregate book value of approximately $10.0 million continue to be held-for-sale as of December 31, 2020 and are recorded in other current assets on the Company’s Consolidated Balance Sheet.

Goodwill and Intangible Assets	12 Months Ended
Goodwill and Intangible Assets	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill And Intangible Assets Disclosure [Text Block]	Note 16 – Goodwill and Other Intangible Assets Changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2019 were as follows: Global Specialty Americas EMEA Asia/Pacific Businesses Total Balance as of December 31, 2018 $ 28,464 $ 17,423 $ 13,149 $ 24,297 $ 83,333 Goodwill additions 188,494 114,167 130,091 91,545 524,297 Currency translation adjustments (573) 1,428 (1,513) 233 (425) Balance as of December 31, 2019 216,385 133,018 141,727 116,075 607,205 Goodwill additions 1,485 531 — 1,329 3,345 Currency translation and other adjustments (4,628) 6,613 16,363 2,314 20,662 Balance as of December 31, 2020 $ 213,242 $ 140,162 $ 158,090 $ 119,718 $ 631,212 Other adjustments in the table above includes updates to the Company’s allocation of the Houghton purchase price and associated goodwill to each of the Company’s reportable segments during the year ended December 31, 2020, including a $ 2.6 million decrease in the Americas, a $ 1.4 million decrease in EMEA, a $ 8.0 million increase in Asia/Pacific and a $ 0.5 million increase in Global Specialty Businesses. Gross carrying amounts and accumulated amortization for definite-lived intangible assets as of December 31, 2020 and 2019 were as follows: Gross Carrying Accumulated Amount Amortization 2020 2019 2020 2019 Customer lists and rights to sell $ 839,551 $ 792,362 $ 99,806 $ 49,932 Trademarks, formulations and product technology 166,448 157,049 30,483 21,299 Other 6,372 6,261 5,824 5,776 Total definite -lived intangible assets $ 1,012,371 $ 955,672 $ 136,113 $ 77,007 The Company recorded $ 55.9 million, $ 26.7 million and $ 7.3 million of amortization expense during the years ended December 31, 2020, 2019 and 2018, respectively. Amortization is recorded within SG&A in the Company’s Consolidated Statements of Income. Estimated annual aggregate amortization expense for the subsequent five years is as follows: For the year ended December 31, 2021 $ 58,752 For the year ended December 31, 2022 58,590 For the year ended December 31, 2023 58,361 For the year ended December 31, 2024 57,935 For the year ended December 31, 2025 57,263 The Company has four indefinite-lived intangible assets totaling $ 205.1 million as of December 31, 2020, including $ 204.0 million of indefinite-lived intangible assets for trademarks and tradename associated with the Combination. Comparatively, the Company had four indefinite-lived intangible assets for trademarks and tradename totaling $ 243.1 million as of December 31, 2019. The Company completes its annual goodwill and indefinite -lived intangible asset impairment test during the fourth quarter of each year, or more frequently if triggering events indicate a possible impairment in one or more of its reporting units. The Company completed its annual impairment assessment during the fourth quarter of 2020 and concluded no impairment charge was warranted. The Company continually evaluates financial performance, economic conditions and other relevant developments in assessing if an interim period impairment test for one or more of its reporting units is necessary. As of March 31, 2020, the Company evaluated the initial impact of COVID-19 on the Company’s operations, and the volatility and uncertainty in the economic outlook as a result of COVID-19 to determine if they indicated it was more likely than not that the carrying value of any of the Company’s reporting units or indefinite-lived or long-lived assets was not recoverable. The Company concluded that the impact of COVID-19 did not represent a triggering event as of March 31, 2020 with regards to the Company’s reporting units or indefinite-lived and long-lived assets, except for the Company’s Houghton and Fluidcare trademarks and tradename indefinite-lived intangible assets. The determination of estimated fair value of the Houghton and Fluidcare trademarks and tradename indefinite-lived assets was based on a relief from royalty valuation method which requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to the weighted average cost of capital (“WACC”) and royalty rates, as well as revenue growth rates and terminal growth rates. In the first quarter of 2020, as a result of the impact of COVID-19 driving a decrease in projected legacy Houghton net sales in the current year and the impact of the current year decline on projected future legacy Houghton net sales as well as an increase in the WACC assumption utilized in the quantitative impairment assessment, the Company concluded that the estimated fair values of the Houghton and Fluidcare trademarks and tradename intangible assets were less than their carrying values. As a result, an impairment charge of $ 38.0 million, primarily related to the Houghton trademarks and tradename, to write down the carrying values of these intangible assets to their estimated fair values was recorded in the first quarter of 2020. As of December 31, 2020, the Company continued to evaluate the on-going impact of COVID-19 on the Company’s operations, and the volatility and uncertainty in the economic outlook as a result of COVID-19, to determine if this indicated it was more likely than not that the carrying value of any of the Company’s reporting units or indefinite-lived or long-lived intangible assets were not recoverable. The Company concluded that the impact of COVID-19 did not represent a triggering event as of December 31, 2020 with regards to any of the Company’s reporting units or indefinite-lived and long-lived intangible assets. While the Company concluded that the impact of COVID-19 did not represent a triggering event as of December 31, 2020 for any of its other long-lived or indefinite-lived assets or reporting units, the Company will continue to evaluate the impact of COVID-19 on the Company’s current and projected results. If the current economic conditions worsen or projections of the timeline for recovery are significantly extended, then the Company may conclude in the future that the impact from COVID-19 requires the need to perform further interim quantitative impairment tests, which could result in additional impairment charges in the future.

Investments in Associated Companies	12 Months Ended
Investments in Associated Companies	Dec. 31, 2020
Investments in Associated Companies [Abstract]
Investments in Associated Companies [Text Block]	Note 17 – Investments in Associated Companies As of December 31, 2020, the Company held a 50 % investment in and had significant influence over Nippon Quaker Chemical, Ltd. (“Nippon Japan”), Kelko Quaker Chemical, S.A. (“Kelko Panama”) and Houghton Korea acquired in 2019 in connection with the Combination, and held a 32 % investment in and had significant influence over Primex, Ltd. (“Primex”). See Note 2 of Notes to Consolidated Financial Statements. The carrying amount of the Company’s equity investments as of December 31, 2020 was $ 95.8 million, which includes investments of $ 68.3 million in Houghton Korea; $ 19.4 million in Primex; $ 7.8 million in Nippon Japan; and $ 0.3 million in Kelko Panama. The Company also has a 50 % equity interest in Kelko Venezuela. Due to heightened foreign exchange controls, deteriorating economic circumstances and other restrictions in Venezuela, during 2018 the Company concluded that it no longer had significant influence over this affiliate. Prior to this determination, the Company historically accounted for this affiliate under the equity method. As of December 31, 2020 and 2019, the Company had no remaining carrying value for its investment in Kelko Venezuela. The following table is a summary of equity income in associated companies by investment for the years ending December 31, 2020, 2019 and 2018: Year Ended December 31, 2020 2019 2018 Houghton Korea $ 5,241 $ 2,337 $ — Nippon Japan 853 850 713 Kelko Panama 107 55 222 Kelko Venezuela — — (138) Primex 1,151 1,822 966 Total equity in net income of associated companies $ 7,352 $ 5,064 $ 1,763 As the Combination closed on August 1, 2019, the Company included five months of equity income from Houghton Korea in its December 31, 2019 Consolidated Statement of Income.

Other Assets	12 Months Ended
Other Assets	Dec. 31, 2020
Other Assets [Abstract]
Other Assets [Text Block]	Note 18 – Other Non-Current Assets Other non-current assets as of December 31, 2020 and 2019 were as follows: 2020 2019 Uncertain tax positions $ 7,209 $ 4,993 Pension assets 6,748 — Debt issuance costs 5,919 7,571 Indemnification assets 7,615 4,006 Supplemental retirement income program 1,961 1,782 Restricted insurance settlement — 19,678 Other 2,344 2,403 Total other assets $ 31,796 $ 40,433 During December 2020, the restrictions lapsed over certain cash that was previously only designated to be used for settlement of asbestos claims at an inactive subsidiary of the Company. As of December 31, 2020 and 2019, indemnification assets relates to certain Houghton foreign subsidiaries for which the Company expects it will incur additional tax amounts which are subject to indemnification under the terms of the Combination share and purchase agreement. These indemnification assets have a corresponding uncertain tax position recorded in other non-current liabilities. As of December 31, 2020, one of the Company’s foreign pension plan’s fair value of plan assets exceeded its gross benefit obligation and was therefore over-funded, which is represented by the line Pension assets in the table above. See Notes 10, 12, 21 and 22 of Notes to Consolidated Financial Statements.

Other Current Liabilities	12 Months Ended
Other Current Liabilities	Dec. 31, 2020
Other Accrued Liabilities [Abstract]
Other Accrued Liabilities Disclosure [Text Block]	Note 19 – Other Accrued Liabilities Other accrued liabilities as of December 31, 2020 and 2019 were as follows: 2020 2019 Non-income taxes $ 26,080 $ 21,176 Current income taxes payable 13,124 7,503 Professional fees, legal, and acquisition-related accruals 11,437 17,103 Short-term lease liabilities 10,901 11,177 Selling expenses and freight accruals 10,475 11,350 Customer advances and sales return reserves 6,380 5,554 Other 13,710 9,742 Total other accrued liabilities $ 92,107 $ 83,605

Debt	12 Months Ended
Debt	Dec. 31, 2020
Debt [Abstract]
Debt [Text Block]	Note 20 – Debt Debt as of December 31, 2020 and 2019 includes the following: As of December 31, 2020 As of December 31, 2019 Interest Outstanding Interest Outstanding Rate Balance Rate Balance Credit Facilities: Revolver 1.65% $ 160,000 3.20% $ 171,169 U.S. Term Loan 1.65% 570,000 3.20% 600,000 EURO Term Loan 1.50% 157,062 1.50% 151,188 Industrial development bonds 5.26% 10,000 5.26% 10,000 Bank lines of credit and other debt obligations Various 2,072 Various 2,608 Total debt $ 899,134 $ 934,965 Less: debt issuance costs (11,099) (14,196) Less: short-term and current portion of long-term debts (38,967) (38,332) Total long -term debt $ 849,068 $ 882,437 Credit facilities The Company’s primary credit facility (as amended, the “Credit Facility”) is comprised of a $ 400.0 million multicurrency revolver (the “Revolver”), a $ 600.0 million term loan (the “U.S. Term Loan”), each with the Company as borrower, and a $ 150.0 million (as of August 1, 2019) Euro equivalent term loan (the “EURO Term Loan” and together with the “U.S. Term Loan”, the “Term Loans” ) with Quaker Chemical B.V., a Dutch subsidiary of the Company as borrower, each with a five-year term maturing in August 2024. Subject to the consent of the administrative agent and certain other conditions, the Company may designate additional borrowers. The maximum amount available under the Credit Facility can be increased by up to $ 300.0 million at the Company’s request if there are lenders who agree to accept additional commitments and the Company has satisfied certain other conditions. Borrowings under the Credit Facility bear interest at a base rate or LIBOR plus an applicable margin based upon the Company’s consolidated net leverage ratio. There are LIBOR replacement provisions that contemplate a further amendment if and when LIBOR ceases to be reported. The variable interest rate incurred on the outstanding borrowings under the Credit Facility during the year ended December 31, 2020 was approximately 2.2 %. As of December 31, 2020, the variable interest rate on the outstanding borrowings under the Credit Facility was approximately 1.6 %. In addition to paying interest on outstanding principal under the Credit Facility, the Company is required to pay a commitment fee ranging from 0.2 % to 0.3 % depending on the Company’s consolidated net leverage ratio to the lenders under the Revolver in respect of the unutilized commitments thereunder. The Company has unused capacity under the Revolver of approximately $ 234 million, net of bank letters of credit of approximately $ 6 million, as of December 31, 2020. Until closing of the Combination, the Company incurred ticking fees to maintain the bank commitment, which began to accrue on September 29, 2017. Concurrent with the closing of the Combination and executing the Credit Facility on August 1, 2019, the Company paid approximately $ 6.3 million of ticking fees. The Credit Facility is subject to certain financial and other covenants. The Company’s initial consolidated net debt to consolidated adjusted EBITDA ratio could not exceed 4.25 to 1, with step downs in the permitted ratio over the term of the Credit Facility. As of December 31, 2020, the consolidated net debt to adjusted EBITDA may not exceed 4.00 to 1. The Company’s consolidated adjusted EBITDA to interest expense ratio cannot be less than 3.0 to 1 over the term of the agreement. The Credit Facility also prohibits the payment of cash dividends if the Company is in default or if the amount of the dividend paid annually exceeds the greater of $50.0 million and 20% of consolidated adjusted EBITDA unless the ratio of consolidated net debt to consolidated adjusted EBITDA is less than 2.0 to 1, in which case there is no such limitation on amount. As of December 31, 2020 and December 31, 2019, the Company was in compliance with all of the Credit Facility covenants. The Term Loans have quarterly principal amortization during their five-year terms, with 5.0 % amortization of the principal balance due in years 1 and 2, 7.5 % in year 3, and 10.0 % in years 4 and 5, with the remaining principal amount due at maturity. During the year ended December 31, 2020, the Company made four quarterly amortization payments related to the Term Loans totaling $ 37.6 million. The Credit Facility is guaranteed by certain of the Company’s domestic subsidiaries and is secured by first priority liens on substantially all of the assets of the Company and the domestic subsidiary guarantors, subject to certain customary exclusions. The obligations of the Dutch borrower are guaranteed only by certain foreign subsidiaries on an unsecured basis. The Credit Facility required the Company to fix its variable interest rates on at least 20% of its total Term Loans. In order to satisfy this requirement as well as to manage the Company’s exposure to variable interest rate risk associated with the Credit Facility, in November 2019, the Company entered into $ 170.0 million notional amounts of three-year interest rate swaps at a base rate of 1.64 % plus an applicable margin as provided in the Credit Facility, based on the Company’s consolidated net leverage ratio. At the time the Company entered into the swaps, and as of December 31, 2020, the aggregate interest rate on the swaps, including the fixed base rate plus an applicable margin, was 3.1 %. See Note 25 of Notes to Consolidated Financial Statements. The Company capitalized $ 23.7 million of certain third-party debt issuance costs in connection with executing the Credit Facility. Approximately $ 15.5 million of the capitalized costs were attributed to the Term Loans and recorded as a direct reduction of long- term debt on the Company’s Consolidated Balance Sheet. Approximately $ 8.3 million of the capitalized costs were attributed to the Revolver and recorded within other assets on the Company’s Consolidated Balance Sheet. These capitalized costs are being amortized into interest expense over the five-year term of the Credit Facility. As of December 31, 2020 and 2019, the Company had $ 11.1 million and $ 14.2 million, respectively, of debt issuance costs recorded as a reduction of long-term debt. As of December 31, 2020 and 2019, the Company had $ 5.9 million and $ 7.6 million, respectively, of debt issuance costs recorded within other assets. Industrial development bonds As of December 31, 2020 and 2019, the Company had fixed rate, industrial development authority bonds totaling $ 10.0 million in principal amount due in 2028 . These bonds have similar covenants to the Credit Facility noted above. The Company also had a $ 5.0 million industrial development authority bond bearing interest at a rate of 5.60 %, which matured and was paid off during the fourth quarter of 2018 . Bank lines of credit and other debt obligations The Company has certain unsecured bank lines of credit and discounting facilities in certain foreign subsidiaries, which are not collateralized. The Company’s other debt obligations primarily consist of certain domestic and foreign low interest rate or interest- free municipality-related loans, local credit facilities of certain foreign subsidiaries and capital lease obligations. Total unused capacity under these arrangements as of December 31, 2020 was approximately $ 40 million. In addition to the bank letters of credit described in the “Credit facilities” subsection above, the Company’s only other off-balance sheet arrangements include certain financial and other guarantees. The Company’s total bank letters of credit and guarantees outstanding as of December 31, 2020 were approximately $ 10 million. The Company incurred the following debt related expenses included within Interest expense, net, in the Consolidated Statements of Income: Year Ended December 31, 2020 2019 2018 Interest expense $ 23,552 $ 16,788 $ 6,158 Amortization of debt issuance costs 4,749 1,979 70 Total $ 28,301 $ 18,767 $ 6,228 Based on the variable interest rates associated with the Credit Facility, as of December 31, 2020 and 2019, the amounts at which the Company’s total debt were recorded are not materially different from their fair market value. At December 31, 2020, annual maturities on long-term borrowings maturing in the next five fiscal years (excluding the reduction to long-term debt attributed to capitalized and unamortized debt issuance costs) are as follows: 2021 $ 38,795 2022 57,850 2023 76,943 2024 715,227 2025 231

Pension and Postretirement Benefits	12 Months Ended
Pension and Postretirement Benefits	Dec. 31, 2020
Pension and Other Postretirement Benefits [Abstract]
Pension And Other Postretirement Benefits Disclosure [Text Block]	Note 21 – Pension and Other Postretirement Benefits The following table shows the funded status of the Company’s plans’ reconciled with amounts reported in the Consolidated Balance Sheets as of December 31, 2020 and 2019: Other Post- Pension Benefits Retirement Benefits 2020 2019 2020 2019 Foreign U.S. Total Foreign U.S. Total U.S. U.S. Change in benefit obligation Gross benefit obligation at beginning of year $ 217,893 $ 153,723 $ 371,616 $ 111,316 $ 58,734 $ 170,050 $ 4,266 $ 4,106 Service cost 4,340 491 4,831 3,507 434 3,941 5 6 Interest cost 3,416 2,923 6,339 3,046 3,313 6,359 77 143 Employee contributions 73 — 73 73 — 73 — — Effect of plan amendments — 50 50 30 — 30 — — Curtailment gain (2,324) — (2,324) — — — — — Plan settlements (2,316) (53,494) (55,810) (1,087) — (1,087) — — Benefits paid (5,087) (6,138) (11,225) (3,832) (6,034) (9,866) (250) (384) Plan expenses and premiums paid (135) — (135) (129) — (129) — — Transfer in of business acquisition — — — 85,658 86,414 172,072 — — Actuarial loss (gain) 16,834 12,414 29,248 13,616 10,862 24,478 (864) 395 Translation differences and other 14,981 — 14,981 5,695 — 5,695 — — Gross benefit obligation at end of year $ 247,675 $ 109,969 $ 357,644 $ 217,893 $ 153,723 $ 371,616 $ 3,234 $ 4,266 Other Post- Pension Benefits Retirement Benefits 2020 2019 2020 2019 Foreign U.S. Total Foreign U.S. Total U.S. U.S. Change in plan assets Fair value of plan assets at beginning of year $ 195,099 $ 120,550 $ 315,649 $ 94,826 $ 49,415 $ 144,241 $ — $ — Actual return on plan assets 20,367 10,759 31,126 13,458 10,663 24,121 — — Employer contributions 6,912 2,302 9,214 5,223 1,087 6,310 250 384 Employee contributions 73 — 73 73 — 73 — — Plan settlements (2,316) (53,494) (55,810) (1,087) — (1,087) — — Benefits paid (5,087) (6,138) (11,225) (3,832) (6,034) (9,866) (250) (384) Plan expenses and premiums paid (135) (498) (633) (129) (500) (629) — — Transfer in of business acquisition — — — 81,068 65,919 146,987 — — Translation differences 13,876 — 13,876 5,499 — 5,499 — — Fair value of plan assets at end of year $ 228,789 $ 73,481 $ 302,270 $ 195,099 $ 120,550 $ 315,649 $ — $ — Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266) Amounts recognized in the balance sheet consist of: Non-current assets $ 6,748 $ — $ 6,748 $ — $ — $ — $ — $ — Current liabilities (568) (612) (1,180) (359) (2,620) (2,979) (286) (426) Non-current liabilities (25,066) (35,876) (60,942) (22,435) (30,553) (52,988) (2,948) (3,840) Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266) Amounts not yet reflected in net periodic benefit costs and included in accumulated other comprehensive loss: Prior service credit (26) 50 24 1,271 — 1,271 — — Accumulated loss (21,976) (5,532) (27,508) (22,816) (46,560) (69,376) 124 (734) AOCI (22,002) (5,482) (27,484) (21,545) (46,560) (68,105) 124 (734) Cumulative employer contributions (below) or in excess of net periodic benefit cost 3,116 (31,006) (27,890) (1,249) 13,387 12,138 (3,358) (3,532) Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266) The accumulated benefit obligation for all defined benefit pension plans was $344.4 million ($109.5 million U.S. and $234.9 million Foreign) and $366.0 million ( $152.9 million U.S. and approximately $213.1 million Foreign) as of December 31, 2020 and 2019, respectively. Information for pension plans with an accumulated benefit obligation in excess of plan assets: 2020 2019 Foreign U.S. Total Foreign U.S. Total Projected benefit obligation $ 32,373 $ 109,969 $ 142,342 $ 217,893 $ 153,723 $ 371,616 Accumulated benefit obligation 30,892 109,540 140,432 213,060 152,930 365,990 Fair value of plan assets 18,074 73,481 91,555 195,099 120,550 315,649 Information for pension plans with a projected benefit obligation in excess of plan assets: 2020 2019 Foreign U.S. Total Foreign U.S. Total Projected benefit obligation $ 32,373 $ 109,969 $ 142,342 $ 217,893 $ 153,723 $ 371,616 Fair value of plan assets 18,074 73,481 91,555 195,099 120,550 315,649 Components of net periodic benefit costs – pension plans: 2020 2019 Foreign U.S. Total Foreign U.S. Total Service cost $ 4,340 $ 491 $ 4,831 $ 3,507 $ 434 $ 3,941 Interest cost 3,416 2,923 6,339 3,046 3,313 6,359 Expected return on plan assets (4,262) (4,810) (9,072) (3,668) (3,227) (6,895) Settlement loss (88) 22,667 22,579 258 — 258 Curtailment charge (1,155) — (1,155) — — — Actuarial loss amortization 886 2,110 2,996 757 2,348 3,105 Prior service (credit) cost amortization (167) — (167) (165) — (165) Net periodic benefit cost $ 2,970 $ 23,381 $ 26,351 $ 3,735 $ 2,868 $ 6,603 2018 Foreign U.S. Total Service cost $ 3,426 $ 383 $ 3,809 Interest cost 2,254 1,847 4,101 Expected return on plan assets (2,228) (2,803) (5,031) Settlement loss 2 — 2 Actuarial loss amortization 881 2,276 3,157 Prior service (credit) cost amortization (175) 59 (116) Net periodic benefit cost $ 4,160 $ 1,762 $ 5,922 Other changes recognized in other comprehensive income – pension plans: 2020 2019 Foreign U.S. Total Foreign U.S. Total Net (gain) loss arising during the period $ (1,594) $ 1,536 $ (58) $ 3,826 $ 3,926 $ 7,752 Effect of plan amendment Recognition of amortization in net periodic benefit cost Settlement (loss) (39) (22,667) (22,706) — — — Prior service credit (cost) 1,325 50 1,375 196 — 196 Actuarial loss (758) 3,967 3,209 (1,015) (2,347) (3,362) Curtailment Recognition (3) — (3) — — — Effect of exchange rates on amounts included in AOCI 1,535 — 1,535 (61) — (61) Total recognized in other comprehensive loss (income) 466 (17,114) (16,648) 2,946 1,579 4,525 Total recognized in net periodic benefit cost and other comprehensive loss (income) $ 3,436 $ 6,267 $ 9,703 $ 6,681 $ 4,447 $ 11,128 2018 Foreign U.S. Total Net gain arising during period $ (663) $ 453 $ (210) Recognition of amortization in net periodic benefit cost Prior service credit (cost) 175 (59) 116 Actuarial loss (883) (2,276) (3,159) Effect of exchange rates on amounts included in AOCI (890) — (890) Total recognized in other comprehensive loss (2,261) (1,882) (4,143) Total recognized in net periodic benefit cost and other comprehensive loss $ 1,899 $ (120) $ 1,779 Components of net periodic benefit costs – other postretirement plan: 2020 2019 2018 Service cost $ 5 $ 6 $ 7 Interest cost 77 143 130 Actuarial loss amortization (5) — 42 Net periodic benefit costs $ 77 $ 149 $ 179 Other changes recognized in other comprehensive income – other postretirement benefit plans: 2020 2019 2018 Net (gain) loss arising during period $ (864) $ 395 $ (443) Amortization of actuarial loss in net periodic benefit costs 5 — (42) Total recognized in other comprehensive (income) loss (859) 395 (485) Total recognized in net periodic benefit cost and other comprehensive (income) loss $ (782) $ 544 $ (306) Weighted-average assumptions used to determine benefit obligations as of December 31, 2020 and 2019: Other Postretirement Pension Benefits Benefits 2020 2019 2020 2019 U.S. Plans: Discount rate 2.19 % 3.06 % 2.05 % 2.98 % Rate of compensation increase 6.00 % 6.00 % N/A N/A Foreign Plans: Discount rate 1.79 % 1.83 % N/A N/A Rate of compensation increase 2.74 % 2.58 % N/A N/A Weighted-average assumptions used to determine net periodic benefit costs for the years ended December 31, 2020 and 2019: Other Postretirement Pension Benefits Benefits 2020 2019 2020 2019 U.S. Plans: Discount rate 3.11 % 4.08 % 2.99 % 4.03 % Expected long-term return on plan assets 6.50 % 5.75 % N/A N/A Rate of compensation increase 6.00 % 5.50 % N/A N/A Foreign Plans: Discount rate 2.30 % 2.30 % N/A N/A Expected long-term return on plan assets 2.20 % 3.13 % N/A N/A Rate of compensation increase 2.79 % 2.87 % N/A N/A The long-term rates of return on assets were selected from within the reasonable range of rates determined by (a) historical real returns for the asset classes covered by the investment policy and (b) projections of inflation over the long-term period during which benefits are payable to plan participants. See Note 1 of Notes to Consolidated Financial Statements for further information. Assumed health care cost trend rates as of December 31, 2020 and 2019: 2020 2019 Health care cost trend rate for next year 5.70 % 5.90 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2037 2037 Plan Assets and Fair Value The Company’s pension plan target asset allocation and the weighted-average asset allocations as of December 31, 2020 and 2019 by asset category were as follows: Asset Category Target 2020 2019 U.S. Plans Equity securities 10 % 58 % 32 % Debt securities 90 % 36 % 64 % Other 0 % 6 % 4 % Total 100 % 100 % 100 % Foreign Plans Equity securities 37 % 33 % 34 % Debt securities 53 % 45 % 45 % Other 10 % 22 % 21 % Total 100 % 100 % 100 % As of December 31, 2020 and 2019, “Other” consisted principally of cash and cash equivalents, and investments in real estate funds. The following is a description of the valuation methodologies used for the investments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy, where applicable: Cash and Cash Equivalents Cash and cash equivalents consist of cash and money market funds and are classified as Level 1 investments. Commingled Funds Investments in the U.S. pension plan and foreign pension plan commingled funds represent pooled institutional investments, including primarily collective investment trusts. These commingled funds are not available on an exchange or in an active market and these investments are valued using their net asset value (“NAV”), which is generally based on the underlying asset values of the investments held in the trusts. As of December 31, 2020, the foreign pension plan commingled funds included approximately 35 percent of investments in equity securities, 51 percent of investments in fixed income securities, and 14 percent of other non-related investments, primarily real estate. Pooled Separate Accounts Investments in the U.S. pension plan pooled separate accounts consist of annuity contracts and are valued based on the reported unit value at year end. Units of the pooled separate account are not traded on an exchange or in an active market; however, valuation is based on the underlying investments of each pooled separate account and are classified as Level 2 investments. As of December 31, 2020, the U.S. pension plan pooled separate accounts included approximately 61 percent of investments in equity securities and 39 percent of investments in fixed income securities. Fixed Income Government Securities Investments in foreign pension plans fixed income government securities were valued using third party pricing services which are based on a combination of quoted market prices on an exchange in an active market as well as proprietary pricing models and inputs using observable market data and are classified as Level 2 investments. Insurance Contract Investments in the foreign pension plan insurance contract are valued at the highest value available for the Company at year end, either the reported cash surrender value of the contract or the vested benefit obligation. Both the cash surrender value and the vested benefit obligation are determined based on unobservable inputs, which are contractually or actuarially determined, regarding returns, fees, the present value of the future cash flows of the contract and benefit obligations. The contract is classified as a Level 3 investment. Diversified Equity Securities - Registered Investment Companies Investments in the foreign pension plans diversified equity securities of registered investment companies are based upon the quoted redemption value of shares in the fund owned by the plan at year end. The shares of the fund are not available on an exchange or in an active market; however, the fair value is determined based on the underlying investments in the fund as traded on an exchange in an active market and are classified as Level 2 investments. Fixed Income – Foreign Registered Investment Companies Investments in the foreign pension plans fixed income securities of foreign registered investment companies are based upon the quoted redemption value of shares in the fund owned by the plan at year end. The shares of the fund are not available on an exchange or in an active market; however, the fair value is determined based on the underlying investments in the fund as traded on an exchange in an active market and are classified as Level 2 investments. Diversified Investment Fund - Registered Investment Companies Investments in the foreign pension plan diversified investment fund of registered investment companies are based upon the quoted redemption value of shares in the fund owned by the plan at year end. This fund is not available on an exchange or in an active market and this investment is valued using its NAV, which is generally based on the underlying asset values of the investments held. As of December 31, 2020, the diversified investment funds included approximately 62 percent of investments in equity securities, 19 percent of investments in fixed income securities, and 19 percent of other alternative investments. Other – Alternative Investments Investments in the foreign pension plans include certain other alternative investments such as inflation and interest rate swaps. These investments are valued based on unobservable inputs, which are contractually or actuarially determined, regarding returns, fees, the present value of future cash flows of the contract and benefit obligations. These alternative investments are classified as Level 3 investments. Real Estate The U.S. and foreign pension plans’ investment in real estate consists of investments in property funds. The funds’ underlying investments consist of real property which are valued using unobservable inputs. These property funds are classified as a Level 3 investment. As of December 31, 2020 and 2019, the U.S. and foreign plans’ investments measured at fair value on a recurring basis were as follows: Fair Value Measurements at December 31, 2020 Total Using Fair Value Hierarchy U.S. Pension Assets Fair Value Level 1 Level 2 Level 3 Pooled separate accounts $ 69,385 $ — $ 69,385 $ — Real estate 4,096 — — 4,096 Subtotal U.S. pension plan assets in fair value hierarch y $ 73,481 $ — $ 69,385 $ 4,096 Total U.S. pension plan assets $ 73,481 Foreign Pension Assets Cash and cash equivalents $ 634 $ 634 $ — $ — Insurance contract 112,920 — — 112,920 Diversified equity securities - registered investment companies 8,851 — 8,851 — Fixed income – foreign registered investment companies 3,711 — 3,711 — Fixed income government securities 37,579 — 37,579 — Real estate 5,679 — — 5,679 Other - alternative investments 10,638 — — 10,638 Sub-total of foreign pension assets in fair value hierarchy $ 180,012 $ 634 $ 50,141 $ 129,237 Commingled funds measured at NAV 2,368 Diversified investment fund - registered investment companies measured at NAV 46,409 Total foreign pension assets $ 228,789 Total pension assets in fair value hierarchy $ 253,493 $ 634 $ 119,526 $ 133,333 Total pension assets measured at NAV 48,777 Total pension assets $ 302,270 Fair Value Measurements at December 31, 2019 Total Using Fair Value Hierarchy U.S. Pension Assets Fair Value Level 1 Level 2 Level 3 Cash and cash equivalents $ 450 $ 450 $ — $ — Pooled separate accounts 64,636 — 64,636 — Real estate 4,060 — — 4,060 Subtotal U.S. pension plan assets in fair value hierarch y $ 69,146 $ 450 $ 64,636 $ 4,060 Commingled funds measured at NAV 51,404 Total U.S. pension plan assets $ 120,550 Foreign Pension Assets Cash and cash equivalents $ 1,502 $ 1,502 $ — $ — Insurance contract 92,657 — — 92,657 Diversified equity securities - registered investment companies 8,604 — 8,604 — Fixed income – foreign registered investment companies 3,021 — 3,021 — Fixed income government securities 32,512 — 32,512 — Real estate 5,521 — — 5,521 Other - alternative investments 9,436 — — 9,436 Sub-total of foreign pension assets in fair value hierarchy $ 153,253 $ 1,502 $ 44,137 $ 107,614 Commingled funds measured at NAV 2,037 Diversified investment fund - registered investment companies measured at NAV 39,809 Total foreign pension assets $ 195,099 Total pension assets in fair value hierarchy $ 222,399 $ 1,952 $ 108,773 $ 111,674 Total pension assets measured at NAV 93,250 Total pension assets $ 315,649 Certain investments that are measured at fair value using the NAV per share (or its equivalent) have not been classified in the fair value hierarchy. The fair value amounts presented for these investments in the preceding tables are intended to permit reconciliation of the fair value hierarchies to the line items presented in the statements of net assets available for benefits. Changes in the fair value of the plans’ Level 3 investments during the years ended December 31, 2020 and 2019 were as follows: Insurance Alternative Contract Real Estate Investments Total Balance as of December 31, 2018 $ 79,873 2,382 — $ 82,255 Purchases 3,762 — 1,029 4,791 Assets acquired in business combinations 129 7,058 8,914 16,101 Sales — (238) (278) (516) Settlements (1,730) — — (1,730) Unrealized (losses) gains 12,199 403 (960) 11,642 Currency translation adjustment (1,576) (24) 731 (869) Balance as of December 31, 2019 92,657 9,581 9,436 111,674 Purchases 3,902 18 989 4,909 Settlements (2,027) — — (2,027) Unrealized gains (losses) 8,917 (16) (171) 8,730 Currency translation adjustment 9,471 192 384 10,047 Balance as of December 31, 2020 $ 112,920 $ 9,775 $ 10,638 $ 133,333 In the fourth quarter of 2018, the Company began the process of terminating its Legacy Quaker noncontributory U.S. pension plan (“Legacy Quaker U.S. Pension Plan”). During the third quarter of 2019, the Company received a favorable termination determination letter from the Internal Revenue Service (“I.R.S.”) and completed the Legacy Quaker U.S. Pension Plan termination during the first quarter of 2020. In order to terminate the Legacy Quaker U.S. Pension Plan in accordance with I.R.S. and Pension Benefit Guaranty Corporation requirements, the Company was required to fully fund the Legacy Quaker U.S. Pension Plan on a termination basis and the amount necessary to do so was approximately $ 1.8 million, subject to final true up adjustments. In the third quarter of 2020, the Company finalized the amount of the liability and related annuity payments and received a refund in premium of approximately $ 1.6 million. In addition, the Company recorded a non-cash pension settlement charge at plan termination of approximately $ 22.7 million. This settlement charge included the immediate recognition into expense of the related unrecognized losses within AOCI on the balance sheet as of the plan termination date. In connection with the Combination, the Company indirectly acquired all of Houghton’s defined benefit pension plans, which are included in the tables set forth above. The pension plans cover certain U.S. salaried and hourly employees as well as certain employees in the U.K., France and Germany. The Houghton U.S. plans provide benefits based on an employee’s years of service and compensation received for the highest five consecutive years of earnings. The foreign plans provide benefits based on a formula of years and service and a percentage of compensation which varies among the various countries. The Company contributes to a multiemployer defined benefit pension plan under terms of a collective bargaining union contract (the Cleveland Bakers and Teamsters Pension Fund, Employer Identification Number: 34-0904419 -001). The expiration date of the collective bargaining contract is May 1, 2022 . As of January 1, 2019, the last valuation date available for the multiemployer plan, total plan liabilities were approximately $ 589 million. As of December 31, 2019, the multiemployer pension plan had total plan assets of approximately $ 364 million. The Company’s contribution rate to the multiemployer pension plan is specified in the collective bargaining union contract and contributions are made to the plan based on its union employee payroll. The Company contributed $ 0.1 million during the year ended December 31, 2020. The Employee Retirement Income Security Act of 1974, as amended by the Multi- Employer Pension Plan Amendments Act of 1980, imposes certain contingent liabilities upon an employer who is a contributor to a multiemployer pension plan if the employer withdraws from the plan or the plan is terminated or experiences a mass withdrawal. While the Company may also have additional liabilities imposed by law as a result of its participation in the multiemployer defined benefit pension plan, there is no liability as of December 31, 2020. The Pension Protection Act of 2006 (the “PPA”) also added special funding and operational rules generally applicable to plan years beginning after 2007 for multiemployer plans with certain classifications based on a multitude of factors (including, for example, the plan’s funded percentage, cash flow position and whether the plan is projected to experience a minimum funding deficiency). The plan to which the Company contributes is in “critical” status. Plans in the “critical” status classification must adopt measures to improve their funded status through a funding improvement or rehabilitation plan which may require additional contributions from employers (which may take the form of a surcharge on benefit contributions) and/or modifications to retiree benefits. The amount of additional funds that the Company may be obligated to contribute to the plan in the future cannot be estimated as such amounts will be likely based on future levels of work that require the specific use of those union employees covered by the plan, and the amount of that future work and the number of affected employees that may be needed is not reasonably estimable. Cash Flows Contributions The Company expects to make minimum cash contributions of approximately $10.0 million to its pension plans (approximately $5.9 million U.S. and $4.1 million Foreign) and approximately $0.3 million to its other postretirement benefit plan in 2021. Estimated Future Benefit Payments Excluding any impact related to the PPA noted above, the following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Other Post- Pension Benefits Retirement Foreign U.S. Total Benefits 2021 $ 6,658 $ 5,923 $ 12,581 $ 286 2022 6,939 5,298 12,237 278 2023 7,024 6,072 13,096 265 2024 6,745 6,234 12,979 245 2025 7,394 6,228 13,622 226 2025 to 2029 42,522 30,443 72,965 923 The Company maintains a plan under which supplemental retirement benefits are provided to certain officers. Benefits payable under the plan are based on a combination of years of service and existing postretirement benefits. Included in total pension costs are charges of $ 2.5 million, $ 1.8 million and $ 1.6 million for the years ended December 31, 2020, 2019 and 2018, respectively, representing the annual accrued benefits under this plan. Defined Contribution Plan The Company has a 401(k) plan with an employer match covering a majority of its U.S. employees. The plan allows for and the Company previously paid a nonelective contribution on behalf of participants who have completed one year of service equal to 3% of the eligible participants’ compensation in the form of Company common stock. During 2019 and 2018, the Company made both non- elective and elective 401(k) matching contributions in cash, rather than stock. Beginning in April 2020, the Company began matching both non-elective and elective 401(k) contributions in fully vested shared of the Company’s common stock rather than cash. See Note 8 of Notes to Consolidated Financial Statements. Total Company contributions were $ 5.7 million, $ 4.0 million and $ 3.1 million for the years ended December 31, 2020, 2019 and 2018, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section S99
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (o)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (p)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (q)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

+ Details

Other Non-Current Liabilities	12 Months Ended
Other Non-Current Liabilities	Dec. 31, 2020
Other Non-Current Liabilities [Abstract]
Other Liabilities Disclosure [TextBlock]	Note 22 – Other Non-Current Liabilities Other non-current liabilities as of December 31, 2020 and 2019 were as follows: 2020 2019 Inactive subsidiary litigation and settlement reserve $ 542 $ 19,678 Non-current income taxes payable 8,500 8,500 Uncertain tax positions (includes interest and penalties) 28,961 24,609 Fair value of interest rate swaps 4,672 415 Environmental reserves 4,610 5,259 Deferred and other long-term compensation 6,257 6,625 Other 1,627 1,298 Total other non-current liabilities $ 55,169 $ 66,384 The line item Inactive subsidiary litigation and settlement reserve in the table above was previously titled Restricted insurance settlement and has been updated in the current year related to the December 2020 termination of restrictions on the previously restricted amounts, as described in Note 12 of Notes to Consolidated Financial Statements.

Equity and Noncontrolling Interest	12 Months Ended
Equity and Noncontrolling Interest	Dec. 31, 2020
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	Note 23 – Equity and Accumulated Other Comprehensive Loss The Company has 30,000,000 shares of common stock authorized with a par value of $ 1 , and 17,850,616 and 17,735,162 shares issued and outstanding as of December 31, 2020 and 2019, respectively. The change in shares issued and outstanding during 2020 was primarily related to 49,906 shares issued for share-based compensation plans and 65,548 shares issued for the exercise of stock options and other share activity. The Company is authorized to issue 10,000,000 shares of preferred stock with $ 1 par value, subject to approval by the Board of Directors. The Board of Directors may designate one or more series of preferred stock and the number of shares, rights, preferences, and limitations of each series. As of December 31, 2020, no preferred stock had been issued. The Company has a share repurchase program that was approved by its Board of Directors in 2015 for the repurchase of up to $ 100.0 million of Quaker Chemical Corporation common stock. The Company has not repurchased any shares under the program for the years ended December 31, 2020, 2019 and 2018. As of December 31, 2020, there was approximately $ 86.9 million of common stock remaining to be purchased under this share repurchase program. The following table shows the reclassifications from and resulting balances of AOCI for the years ended December 31, 2020, 2019 and 2018: Defined Unrealized Gain (Loss) in Currency Benefit Translation Pension Available-for - Derivative Adjustments Plans Sale Securities Instruments Total Balance as of December 31, 2017 $ (31,893) $ (34,093) $ 886 $ — $ (65,100) Other comprehensive (loss) income before reclassifications (17,429) 1,543 (2,622) — (18,508) Amounts reclassified from AOCI — 3,085 435 — 3,520 Related tax amounts — (1,086) 459 — (627) Balance as of December 31, 2018 (49,322) (30,551) (842) — (80,715) Other comprehensive income (loss) before reclassifications 4,754 (8,088) 2,951 (415) (798) Amounts reclassified from AOCI — 3,169 (301) — 2,868 Related tax amounts — 937 (557) 95 475 Balance as of December 31, 2019 (44,568) (34,533) 1,251 (320) (78,170) Other comprehensive income (loss) before reclassifications 41,693 (6,617) 2,848 (4,257) 33,667 Amounts reclassified from AOCI — 24,141 (202) — 23,939 Related tax amounts — (6,458) (555) 979 (6,034) Balance as of December 31, 2020 $ (2,875) $ (23,467) $ 3,342 $ (3,598) $ (26,598) All reclassifications related to unrealized gain (loss) in available-for-sale securities relate to the Company’s equity interest in a captive insurance company and are recorded in equity in net income of associated companies. The amounts reported in other comprehensive income for non-controlling interest are related to currency translation adjustments.

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	Note 24 – Fair Value Measures The Company has valued its company-owned life insurance policies at fair value. These assets are subject to fair value measurement as follows: Fair Value Measurements at December 31, 2020 Total Using Fair Value Hierarchy Assets Fair Value Level 1 Level 2 Level 3 Company-owned life insurance $ 1,961 $ — $ 1,961 $ — Total $ 1,961 $ — $ 1,961 $ — Fair Value Measurements at December 31, 2019 Total Using Fair Value Hierarchy Assets Fair Value Level 1 Level 2 Level 3 Company-owned life insurance $ 1,782 $ — $ 1,782 $ — Total $ 1,782 $ — $ 1,782 $ — The fair values of Company-owned life insurance assets are based on quotes for like instruments with similar credit ratings and terms. The Company did not hold any Level 3 investments as of December 31, 2020 or 2019, respectively, so related disclosures have not been included.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Hedging Activities	12 Months Ended
Hedging Activities	Dec. 31, 2020
General Discussion Of Derivative Instruments And Hedging Activities [Abstract]
Derivative Instruments And Hedging Activities Disclosure [Text Block]	Note 25 – Hedging Activities In order to satisfy certain requirements of the Credit Facility as well as to manage the Company’s exposure to variable interest rate risk associated with the Credit Facility, in November 2019, the Company entered into $ 170.0 million notional amounts of three- year interest rate swaps. See Note 20 of Notes to Consolidated Financial Statements. These interest rate swaps are designated as cash flow hedges and, as such, the contracts are marked-to-market at each reporting date and any unrealized gains or losses are included in AOCI to the extent effective and reclassified to interest expense in the period during which the transaction effects earnings or it becomes probable that the forecasted transaction will not occur. The Company did not utilize derivatives designated as cash flow hedges during the year ended December 31, 2018. The balance sheet classification and fair values of the Company’s derivative instruments, which are Level 2 measurements, are as follows: Fair Value Consolidated Balance Sheet December 31, Location 2020 2019 Derivatives designated as cash flow hedges: Interest rate swaps Other non-current liabilities $ 4,672 $ 415 $ 4,672 $ 415 The following table presents the net unrealized loss deferred to AOCI: December 31, 2020 2019 Derivatives designated as cash flow hedges: Interest rate swaps AOCI $ 3,598 $ 320 $ 3,598 $ 320 The following table presents the net loss reclassified from AOCI to earnings: For the Years Ended December 31, 2020 2019 2018 Amount and location of (expense) income reclassified from AOCI into (expense) income (Effective Portion) Interest expense, net $ (1,754) $ 29 $ — Interest rate swaps are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. As such, in accordance with the Company’s accounting policy, these derivative instruments are recorded on a net basis within the Consolidated Balance Sheets.

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies Disclosure [Text Block]	Note 26 – Commitments and Contingencies In 1992, the Company identified certain soil and groundwater contamination at AC Products, Inc. (“ACP”), a wholly owned subsidiary. In voluntary coordination with the Santa Ana California Regional Water Quality Board, ACP has been remediating the contamination, the principal contaminant of which is perchloroethylene (“PERC”). In 2004, the Orange County Water District (“OCWD”) filed a civil complaint against ACP and other parties seeking to recover compensatory and other damages related to the investigation and remediation of the contamination in the groundwater. Pursuant to a settlement agreement with OCWD, ACP agreed, among other things, to operate the two groundwater treatment systems to hydraulically contain groundwater contamination emanating from ACP’s site until the concentrations of PERC released by ACP fell below the current Federal maximum contaminant level for four consecutive quarterly sampling events. In 2014, ACP ceased operation at one of its two groundwater treatment systems, as it had met the above condition for closure. In 2020, the Santa Ana Regional Water Quality Control Board asked that ACP conduct some additional indoor and outdoor soil vapor testing on and near the ACP site to confirm that ACP continues to meet the applicable local standards and ACP has begun the testing program. As of December 31, 2020, ACP believes it is close to meeting the conditions for closure of the remaining groundwater treatment system but continues to operate this system while in discussions with the relevant authorities. As of December 31, 2020, the Company believes that the range of potential-known liabilities associated with the balance of ACP water remediation program is approximately $ 0.1 million to $ 1.0 million. The low and high ends of the range are based on the length of operation of the treatment system as determined by groundwater modeling. Costs of operation include the operation and maintenance of the extraction well, groundwater monitoring and program management. An inactive subsidiary of the Company that was acquired in 1978 sold certain products containing asbestos, primarily on an installed basis, and is among the defendants in numerous lawsuits alleging injury due to exposure to asbestos. The subsidiary discontinued operations in 1991 and has no remaining assets other than proceeds received from insurance settlements. To date, the overwhelming majority of these claims have been disposed of without payment and there have been no adverse judgments against the subsidiary. Based on a continued analysis of the existing and anticipated future claims against this subsidiary, it is currently projected that the subsidiary’s total liability over the next 50 years for these claims is approximately $ 0.5 million (excluding costs of defense). Although the Company has also been named as a defendant in certain of these cases, no claims have been actively pursued against the Company, and the Company has not contributed to the defense or settlement of any of these cases pursued against the subsidiary. These cases were handled by the subsidiary’s primary and excess insurers who had agreed in 1997 to pay all defense costs and be responsible for all damages assessed against the subsidiary arising out of existing and future asbestos claims up to the aggregate limits of their policies. A significant portion of this primary insurance coverage was provided by an insurer that is insolvent, and the other primary insurers asserted that the aggregate limits of their policies had been exhausted. The subsidiary challenged the applicability of these limits to the claims being brought against the subsidiary. In response, two of the three carriers entered into separate settlement and release agreements with the subsidiary in 2005 and 2007 for $ 15.0 million and $ 20.0 million, respectively. The proceeds of both settlements were restricted and could only be used to pay claims and costs of defense associated with the subsidiary’s asbestos litigation. In 2007, the subsidiary and the remaining primary insurance carrier entered into a Claim Handling and Funding Agreement, under which the carrier is paying 27 % of defense and indemnity costs incurred by or on behalf of the subsidiary in connection with asbestos bodily injury claims. The agreement continues until terminated and can only be terminated by either party by providing a minimum of two years prior written notice. As of December 31, 2020, no notice of termination has been given under this agreement. At the end of the term of the agreement, the subsidiary may choose to again pursue its claim against this insurer regarding the application of the policy limits. The Company believes that, if the coverage issues under the primary policies with the remaining carrier are resolved adversely to the subsidiary and all settlement proceeds were used, the subsidiary may have limited additional coverage from a state guarantee fund established following the insolvency of one of the subsidiary’s primary insurers. Nevertheless, liabilities in respect of claims may exceed the assets and coverage available to the subsidiary. If the subsidiary’s assets and insurance coverage were to be exhausted, claimants of the subsidiary may actively pursue claims against the Company because of the parent-subsidiary relationship. The Company does not believe that such claims would have merit or that the Company would be held to have liability for any unsatisfied obligations of the subsidiary as a result of such claims. After evaluating the nature of the claims filed against the subsidiary and the small number of such claims that have resulted in any payment, the potential availability of additional insurance coverage at the subsidiary level, the additional availability of the Company’s own insurance and the Company’s strong defenses to claims that it should be held responsible for the subsidiary’s obligati ons because of the parent-subsidiary relationship, the Company believes it is not probable that the Company will incur losses. The Company has been successful to date having any claims naming it dismissed during initial proceedings. Since the Company may be in this stage of litigation for some time, it is not possible to estimate additional losses or range of loss, if any. As a result of the closing of the Combination on August 1, 2019, the Company is party to environmental matters related to certain Houghton domestic and foreign properties currently or previously owned, described below. These environmental matters primarily require the Company to perform long-term monitoring as well as operating and maintenance at each of the applicable sites. The Company continually evaluates its obligations related to such matters, and based on historical costs incurred and projected costs to be incurred over the next 28 years, has estimated the present value range of costs for all of the Houghton environmental matters, on a discounted basis, to be between approximately $ 5.5 million and $ 6.5 million as of December 31, 2020, for which $ 6.0 million is accrued within other accrued liabilities and other non-current liabilities on the Company’s Consolidated Balance Sheet as of December 31, 2020. Comparatively, as of December 31, 2019, the Company had $ 6.6 million accrued for with respect to these matters. Houghton’s Sao Paulo, Brazil site was required under Brazilian environmental, health and safety regulations to perform an environmental assessment as part of a permit renewal process. Initial investigations identified soil and ground water contamination in select areas of the site. The site has conducted a multi-year soil and groundwater investigation and corresponding risk assessments based on the result of the investigations. In 2017, the site had to submit a new 5-year permit renewal request and was asked to complete additional investigations to further delineate the site based on review of the technical data by the local regulatory agency, Companhia Ambiental do Estado de São Paulo (“CETESB”). Based on review of the updated investigation data, CETESB issued a Technical Opinion regarding the investigation and remedial actions taken to date. The site developed an action plan and submitted it to CETESB in 2018 based on CETESB requirements. The site intervention plan primarily requires the site, amongst other actions, to conduct periodic monitoring for methane in soil vapors, source zone delineation, groundwater plume delineation, bedrock aquifer assessment, update the human health risk assessment, develop a current site conceptual model and conduct a remedial feasibility study and provide a revised intervention plan. In December 2019, the site submitted a report on the activities completed including the revised site conceptual model and results of the remedial feasibility study and recommended remedial strategy for the site. Other Houghton environmental matters include participation in certain payments in connection with four currently active environmental consent orders related to certain hazardous waste cleanup activities under the U.S. Federal Superfund statute. Houghton has been designated a potentially responsible party (“PRP”) by the Environmental Protection Agency along with other PRPs depending on the site, and has other obligations to perform cleanup activities at certain other foreign subsidiaries. These environmental matters primarily require the Company to perform long- term monitoring as well as operating and maintenance at each of the applicable sites. The Company believes, although there can be no assurance regarding the outcome of other unrelated environmental matters, that it has made adequate accruals for costs associated with other environmental problems of which it is aware. Approximately $ 0.1 million and $ 0.2 million were accrued as of December 31, 2020 and 2019, respectively, to provide for such anticipated future environmental assessments and remediation costs. During the fourth quarter of 2020, one of the Company’s subsidiaries received a notice of inspection from a taxing authority in a country where certain of its subsidiaries operate which related to a non-income (indirect) tax that may be applicable to certain products the subsidiary sells. To date, the Company has not received any assessment from the authority related to potential liabilities that may be due from the Company’s subsidiary. Consequently, there is substantial uncertainty with respect to the Company’s ultimate liability with respect to this indirect tax, as the application of this tax in its given market is ambiguous and interpreted differently among other peer companies and taxing authorities. The Company, with assistance from independent experts, has performed an evaluation of the applicability of this indirect tax to the Company’s subsidiaries in this country. Information available to the Company at this time is only sufficient to establish a range of probable liability, and no amount within the range is considered a better estimate than another. Based on this evaluation, the Company recorded a liability of $ 1.5 million in other accrued liabilities, which reflects the low end of the range of probable indirect tax owed, including interest and taking into account applicable statutes of limitations. Because these amounts in part relate to a Houghton entity acquired in the Combination and for periods prior to the Combination, the Company has submitted an indemnification claim with Houghton’s former owners related to this potential indirect tax liability. The Company recorded a receivable in other assets for approximately $ 1.1 million, which reflects the amount of the $ 1.5 million recorded liability for which the Company anticipates being indemnified. The impact of this indirect tax, net of the recorded indemnification asset, was approximately $ 0.4 million and was recorded as a component of SG&A during the fourth quarter of 2020. As noted, the Company believes there is substantial uncertainty with respect to its ultimate liability given the ambiguous application of this indirect tax. At this time, the Company’s best estimate of a potential range for possible assessments, including additional amounts that may be assessed under these indirect tax laws, would be approximately $ 0.4 million to $ 34 million, which is net of approximately $ 9 million of estimated income tax deductions and approximately $ 22 million of applicable rights to indemnification from Houghton’s former owners. The Company is party to other litigation which management currently believes will not have a material adverse effect on the Company’s results of operations, cash flows or financial condition. In addition, the Company has an immaterial amount of contractual purchase obligations.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2020
Subsequent Events Abstract [Abstract]
Subsequent Events Disclosure [Text Block]	Note 27 – COVID-19 Global Pandemic In early 2020, a global outbreak of COVID-19 occurred initially in China and then across all locations where the Company does business, and which continued throughout the rest of the year. In March 2020, the World Health Organization formally identified the COVID-19 outbreak as a pandemic. In an effort to halt the outbreak of COVID-19, the governments of impacted countries, including but not limited to the U.S., the European Union, and China, have taken various actions to reduce its spread, including travel restrictions, shutdowns of businesses deemed nonessential, and stay-at-home or similar orders. This outbreak and associated measures to reduce its spread have caused significant disruptions to the operations of the Company and its suppliers and customers. The disruptions and negative impact to the Company include significant volume declines and lower net sales initially at its China subsidiaries in the first quarter of 2020 and beginning in late March continued throughout the rest of 2020 at almost all of its other sites as the global economy slowed significantly in response to the pandemic. Management continues to monitor the impact that the COVID-19 pandemic is having on the Company, the overall specialty chemical industry, and the economies and markets in which the Company operates. Further, management continues to evaluate how COVID-19-related circumstances, such as remote work arrangements, have affected financial reporting processes, internal control over financial reporting, and disclosure controls and procedures. While the circumstances have presented and are expected to continue to present challenges, at this time, management does not believe that COVID-19 has had a material impact on financial reporting processes, internal control over financial reporting, and disclosure controls and procedures. The full extent of the COVID-19 pandemic related business and travel restrictions and changes to business and consumer behavior intended to reduce its spread are uncertain as of the date of this Report as COVID-19 and the responses of governmental authorities continue to evolve globally. The Company cannot reasonably estimate the magnitude of the effects these conditions will have on the Company’s operations in the future as they are subject to significant uncertainties relating to the ultimate geographic spread of the virus, the incidence and severity of the symptoms, the duration or resurgence of the outbreak, the length of the travel restrictions and business closures imposed by governments of impacted countries, and the economic response by governments of impacted countries. To the extent that the Company’s customers and suppliers continue to be significantly and adversely impacted by COVID-19, this could reduce the availability, or result in delays, of materials or supplies to or from the Company, which in turn could significantly interrupt the Company’s business operations. Such impacts could grow and become more significant to the Company’s operations and the Company’s liquidity or financial position. Therefore, given the speed and frequency of continuously evolving developments with respect to this pandemic, the Company cannot reasonably estimate the magnitude or the full extent to which COVID-19 may impact the Company’s results of operations, liquidity or financial position.

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of consolidation [Policy Text Block]	All majority-owned subsidiaries are included in the Company’s consolidated financial statements, with appropriate elimination of intercompany balances and transactions.
Consolidation, Variable Interest Entity [Policy Text Block]	The Company is not the primary beneficiary of any variable interest entities (“VIEs”) and therefore the Company’s consolidated financial statements do not include the accounts of any VIEs.
Equity and Cost Method Investments [Policy Text Block]	Investments in associated companies (less than majority- owned and in which the Company has significant influence) are accounted for under the equity method. The Company’s share of net income or losses in these investments in associated companies is included in the Consolidated Statements of Income. The Company periodically reviews these investments for impairments and, if necessary, would adjust these investments to their fair value when a decline in market value or other impairment indicators are deemed to be other than temporary.
Translation of foreign currency [Policy Text Block]	Assets and liabilities of non-U.S. subsidiaries and associated comp anies are translated into U.S. dollars at the respective rates of exchange prevailing at the end of the year. Income and expense accounts are translated at average exchange rates prevailing during the year. Translation adjustments resulting from this process are recorded directly in equity as accumulated other comprehensive (loss) income (“AOCI”) and will be included as income or expense only upon sale or liquidation of the underlying entity or asset. Generally, all of the Company’s non-U.S. subsidiaries use their local currency as their functional currency.
Cash and Cash Equivalents [Policy Text Block]	The Company invests temporary and excess funds in money market securities and financial instruments having maturities within 90 days. The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. The Company has not experienced losses from the aforementioned investments.
Inventories [Policy Text Block]	Inventories: Inventories are valued at the lower of cost or net realizable value, and are valued using the first-in, first-out method.
Long-lived assets [Policy Text Block]	Property, plant and equipment (“PP&E”) are stated at gross cost, less accumulated depreciation. Depreciation is computed using the straight-line method on an individual asset basis over the following estimated useful lives: building s and improvements, 10 to 45 years; and machinery and equipment, 1 to 15 years. The carrying values of long-lived assets are evaluated whenever changes in circumstances or current events indicate the carrying amount of such assets may not be recoverable. An estimate of undiscounted cash flows produced by the asset, or the appropriate group of assets, is compared with the carrying value to determine whether an impairment exists. If necessary, the Company recognizes an impairment loss for the difference between the carrying amount of the assets and their estimated fair value. Fair value is based on current and anticipated future cash flows. Upon sale or other dispositions of long-lived assets, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposals, is recorded in the Consolidated Statements of Income. Expenditures for renewals or improvements that increase the estimated useful life or capacity of the assets are capitalized, whereas expenditures for repairs and maintenance are expensed when incurred.
Capitalized software [Policy Text Block]	The Company capitalizes certain costs in connection with developing or obtaining software for internal use, depending on the associated project. These costs are amortized over a period of 3 to 5 years once the assets are ready for their intended use.
Goodwill and other intangible assets [Policy Text Block]	The Company records goodwill, definite-lived intangible assets and indefinite-lived intangible assets at fair value at the date of acquisition. Goodwill and indefinite-lived intangible assets are not amortized but tested for impairment at least annually. These tests will be performed more frequently if triggering events indicate potential impairment. Definite-lived intangible assets are amortized on a straight -line basis over their estimated useful lives, generally for periods ranging from 4 to 20 years. The Company continually evaluates the reasonableness of the useful lives of these assets, consistent with the discussion of long-lived assets, above.
Revenue recognition [Policy Text Block]	The Company applies the Financial Accounting Standards Board’s (“FASB’s”) guidance on revenue recognition which requires the Company to recognize revenue in an amount that reflects the consideration to which the Company expects to be entitled in exchange for goods or services transferred to its customers. To do this, the Company applies the five-step model in the FASB’s guidance, which requires the Company to: (i) identify the contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when, or as, the Company satisfies a performance obligation.
Accounts receivable and allowance for doubtful accounts [Policy Text Block]	Trade accounts receivable subject the Company to credit risk. Trade accounts receivable are recorded at the invoiced amount and generally do not bear interest. The allowance for doubtful accounts is the Company’s best estimate of the amount of expected credit losses with its existing accounts receivable. The Company recognizes an allowance for credit losses, which represents the portion of the receivable that the Company does not expect to collect over its contractual life, considering past events and reasonable and supportable forecasts of future economic conditions. The Company’s allowance for credit losses on its trade accounts receivable is based on specific collectability facts and circumstances for each outstanding receivable and customer, the aging of outstanding receivables, and the associated collection risk the Company estimates for certain past due aging categories, and also, the general risk to all outstanding accounts receivable based on historical amounts determined to be uncollectible. The Company does not have any off-balance-sheet credit exposure related to its customers.
Research and Development Expense, Policy [Policy Text Block]	Research and development costs are expensed as incurred and are included in selling, general and administrative expenses (“SG&A”).
Environmental liabilities and expenditures [Policy Text Block]	Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated. If there is a range of estimated liability and no amount in that range is considered more probable than another, then the Company records the lowest amount in the range in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”). Environmental costs and remediation costs are capitalized if the costs extend the life, increase the capacity or improve safety or efficiency of the property from the date acquired or constructed, and/or mitigate or prevent contamination in the future.
Asset Retirement Obligations, Policy [Policy Text Block]	The Company follows the FASB’s guidance regarding asset retirement obligations, which addresses the accounting and reporting for obligations associated with the retirement of tangible long-lived assets and the associated retirement costs. Also, the Company follows the FASB’s guidance for conditional asset retirement obligations (“CARO”), which relates to legal obligations to perform an asset retirement activity in which the timing and (or) method of settlement are conditional on a future event that may or may not be within the control of the entity. In accordance with this guidance, the Company records a liability when there is enough information regarding the timing of the CARO to perform a probability-weighted discounted cash flow analysis.
Pension and other postretirement benefits [Policy Text Block]	ther postretirement benefits: The Company maintains various noncontributory retirement plans, covering a portion of its employees in the U.S. and certain other countries, including the Netherlands, the United Kingdom (“U.K.”), Mexico, Sweden, Germany and France. These retirement plans are subject to the provisions of FASB’s guidance regarding employers’ accounting for defined benefit pension plans. The plans of the remaining non-U.S. subsidiaries are, for the most part, either fully insured or integrated with the local governments’ plans and are not subject to the provisions of the guidance. The guidance requires that employers recognize on a prospective basis the funded status of their defined benefit pension and other postretirement plans on their consolidated balance sheet and, also, recognize as a component of AOCI, net of tax, the gains or losses and prior service costs or credits that arise during the period but are not recognized as components of net periodic benefit cost. In addition, the guidance requires that an employer recognize a settlement charge in their consolidated statement of income when certain events occur, including plan termination or the settlement of certain plan liabilities. A settlement charge represents the immediate recognition into expense of a portion of the unrecognized loss within AOCI on the balance sheet in proportion to the share of the projected benefit obligation that was settled. The Company’s Legacy Quaker U.S. pension plan year ends on November 30 and the measurement date is December 31. The measurement date for the Company’s other postretirement benefits plan is December 31. The Company’s global pension investment policies are designed to ensure that pension assets are invested in a manner consistent with meeting the future benefit obligations of the pension plans and maintaining compliance with various laws and regulations including the Employee Retirement Income Security Act of 1974. The Company establishes strategic asset allocation percentage targets and benchmarks for significant asset classes with the aim of achieving a prudent balance between return and risk. The Company’s investment horizon is generally long term, and, accordingly, the target asset allocations encompass a long-term perspective of capital markets, expected risk and return and perceived future economic conditions while also considering the profile of plan liabilities. To the extent feasible, the short-term investment portfolio is managed to match the short-term obligations, the intermediate portfolio duration is matched to reduce the risk of volatility in intermediate plan distributions, and the total return portfolio is managed to maximize the long-term real growth of plan assets. The critical investment principles of diversification, assessment of risk and targeting the optimal expected returns for given levels of risk are applied. The Company’s investment guidelines prohibit the use of securities such as letter stock and other unregistered securities, commodities or commodity contracts, short sales, margin transactions, private placements (unless specifically addressed by addendum), or any derivatives, options or futures for the purpose of portfolio leveraging. The target asset allocation is reviewed periodically and is determined based on a long-term projection of capital market outcomes, inflation rates, fixed income yields, returns, volatilities and correlation relationships. The interaction between plan assets and benefit obligations is periodically studied to assist in establishing such strategic asset allocation targets. Asset performance is monitored with an overall expectation that plan assets will meet or exceed benchmark performance over rolling five-year periods. The Company’s pension committee, as authorized by the Company’s Board of Directors, has discretion to manage the assets within established asset allocation ranges approved by senior management of the Company.
Comprehensive income (loss) [Policy Text Block]	The Company presents other comprehensive income (loss) in its Statements of Comprehensive Income. The Company follows the FASB’s guidance regarding the disclosure of reclassifications from AOCI which requires the disclosure of significant amounts reclassified from each component of AOCI, the related tax amounts and the income statement line items affected by such reclassifications.
Income taxes and uncertain tax positions [Policy Text Block]	The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid. The provision for income taxes represents income taxes paid or payable for the current year and the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax bases of the Company’s assets and liabilities and are adjusted for changes in tax rates and tax laws when changes are enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. The FASB’s guidance regarding accounting for uncertainty in income taxes prescribes the recognition threshold and measurement attributes for financial statement recognition and measurement of tax positions taken or expected to be taken on a tax return. The guidance further requires the determination of whether the benefits of tax positions are probable or more likely than not sustained upon audit based upon the technical merits of the tax position. For tax positions that are determined to be more likely than not sustained upon audit, a company recognizes the largest amount of benefit that is greater than 50 % likely of being realized upon ultimate settlement in the financial statements. For tax positions that are not determined to be more likely than not sustained upon audit, a company does not recognize any portion of the benefit in the financial statements. Additionally, the Company monitors and adjusts for derecognition, classification, and penalties and interest in interim periods, with appropriate disclosure and transition thereto. Also, the amount of interest expense and income related to uncertain tax positions is computed by applying the applicable statutory rate of interest to the difference between the tax position recognized, including timing differences, and the amount previously taken or expected to be taken in a tax return. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. Finally, when applicable, the Company nets its liability for unrecognized tax benefits against deferred tax assets related to net operating losses or other tax credit carryforwards that would apply if the uncertain tax position were settled for the presumed amount at the balance sheet date.
Derivatives [Policy Text Block]	The Company is exposed to the impact of changes in interest rates, foreign currency fluctuations, changes in commodity prices and credit risk. The Company utilizes interest rate swap agreements to enhance its ability to manage risk, including exposure to variability in interest payments associated with its variable rate debt. Derivative instruments are entered into for periods consistent with the related underlying exposures and do not constitute positions independent of those exposures. As of December 31, 2020 and 2019, the Company had certain interest rate swap agreements that were designated as cash flow hedges. Interest rate swaps are entered into with a limited number of counterparties, each of which allows for net settlement of all contracts through a single payment in a single currency in the event of a default on or termination of any one contract. The Company records these instruments on a net basis within the Consolidated Balance Sheets. The effective portion of the change in fair value of the agreement is recorded in AOCI and will be recognized in the Consolidated Statements of Income when the hedge item affects earnings or losses or it becomes probable that the forecasted transaction will not occur.
Fair value measurements [Policy Text Block]	The Company utilizes the FASB’s guidance regarding fair value measurements, which establishes a common definition for fair value to be applied to guidance requiring use of fair value, establishes a framework for measuring fair value and expands disclosure about such fair value measurements. Specifically, the guidance utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. • Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities. • Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. • Level 3: Unobservable inputs that reflect the reporting entity's own assumptions.
Share-based compensation [Policy Text Block]	The Company applies the FASB’s guidance regarding share-based payments, which requires the recognition of the fair value of share-based compensation as a component of expense. The Company has a long-term incentive program (“LTIP”) for key employees which provides for the granting of options to purchase stock at prices not less than its market value on the date of the grant. Most options become exercisable within three years after the date of the grant for a period of time determined by the Company, but not to exceed seven years from the date of grant. Restricted stock awards and restricted stock units issued under the LTIP program are subject to time vesting generally over a one to three-year period. In addition, as part of the Company’s Annual Incentive Plan, nonvested shares may be issued to key employees, which generally would vest over a two to five - year period. In addition, while the FASB’s guidance permits the Company to make an accounting policy election to account for forfeitures as they occur for service condition aspects of certain share-based awards, the Company has decided not to elect this accounting policy and instead has elected to continue utilizing a forfeiture rate assumption. Based on historical experience, the Company has assumed a forfeiture rate of 13 % on certain of its nonvested stock awards. The Company will record additional expense if the actual forfeiture rate is lower than estimated and will record a recovery of prior expense if the actual forfeiture is higher than estimated. The Company also issues performance-dependent stock awards as a component of its LTIP. The fair value of the performance- dependent stock awards is based on their grant-date market value adjusted for the likelihood of attaining certain pre -determined performance goals and is calculated by utilizing a Monte Carlo Simulation model. Compensation expense is recognized on a straight- line basis over the vesting period, generally three years .
Earnings Per Share [Policy Text Block]	The Company follows the FASB’s guidance regarding the calculation of earnings per share for nonvested stock awards with rights to non-forfeitable dividends. The guidance requires nonvested stock awards with rights to non-forfeitable dividends to be included as part of the basic weighted average share calculation under the two-class method.
Segments [Policy Text Block]	The Company’s reportable segments reflect the structure of the Company’s internal organization, the method by which the Company’s resources are allocated and the manner by which the Company and the chief operating decision maker assess its performance
Business Combinations [Policy Text Block]	The Company accounts for business combinations under the acquisition method of accounting. This method requires the recording of acquired assets, including separately identifiable intangible assets and assumed liabilities at their respective acquisition date estimated fair values. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. The determination of the estimated fair value of assets acquired and liabilities assumed requires significant estimates and assumptions. Based on the assessment of additional information during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the estimated fair value of assets acquired and liabilities assumed.
Restructuring activities [Policy Text Block]	Restructuring programs consist of employee severance, rationalization of manufacturing or other facilities and other related items. To account for such programs, the Company applies FASB’s guidance regarding exit or disposal cost obligations. This guidance requires that a liability for a cost associated with an exit or disposal activity be recognized when the liability is incurred, is estimable, and payment is probable.
Reclassification [Policy Text Block]	Certain information has been reclassified to conform to the current year presentation.
Accounting estimates [Policy Text Block]	The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and disclosure of contingencies at the date of the financial statements and the reported amounts of net sales and expenses during the reporting period. Actual results could differ from such estimates.
Credit Loss Financial Instrument [Policy Text Block]	The Company recognizes an allowance for credit losses, which represents the portion of the receivable that the Company does not expect to collect over its contractual life, considering past events and reasonable and supportable forecasts of future economic conditions. The Company estimates credit losses for trade receivables by aggregating similar customer types, because they tend to share similar credit risk characteristics. The Company’s allowance for credit losses on its trade accounts receivable is based on specific collectability facts and circumstances for each outstanding receivable and customer, the aging of outstanding receivables, and the associated collection risk the Company estimates for certain past due aging categories, and also, the general risk to all outstanding accounts receivable based on historical amounts determined to be uncollectible. Trade and other receivables are written off when there is no reasonable expectation of recovery.

Business Combination (Tables)	12 Months Ended
Business Combination (Tables)	Dec. 31, 2020
Houghton [Member]
Business Acquisition [Line Items]
Schedule of fair value of consideration transferred in the Combination [Table Text Block]	Cash transferred to Houghton shareholders (a) $ 170,829 Cash paid to extinguish Houghton debt obligations 702,556 Fair value of common stock issued as consideration (b) 789,080 Total fair value of consideration transferred $ 1,662,465 (a) A portion is held in escrow by a third party, subject to indemnification rights that lapse upon the achievement of certain milestones. (b) Amount was determined based on approximately 4.3 million shares, comprising 24.5 % of the common stock of the Company immediately after the closing, and the closing price per share of Quaker Chemical Corporation common stock of $ 182.27 on August 1, 2019.
Schedule of unaudited Pro Forma [Text Block]	For the years ending Unaudited Pro Forma December 31, (as if the Combination occurred on January 1, 2018) 2019 2018 Net sales $ 1,562,427 $ 1,654,588 Net income attributable to Quaker Chemical Corporation 94,537 35,337
Schedule of estimated fair values of net assets acquired [Table Text Block]	Measurement August 1, Period August 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 75,821 $ — $ 75,821 Accounts receivable 178,922 — 178,922 Inventories 95,193 — 95,193 Prepaid expenses and other assets 10,652 666 11,318 Property, plant and equipment 115,529 (66) 115,463 Right of use lease assets 10,673 — 10,673 Investments in associated companies 66,447 — 66,447 Other non-current assets 4,710 1,553 6,263 Intangible assets 1,028,400 — 1,028,400 Goodwill 494,915 4,625 499,540 Total assets purchased 2,081,262 6,778 2,088,040 Short-term borrowings, not refinanced at closing 9,297 — 9,297 Accounts payable, accrued expenses and other accrued liabilities 150,078 1,127 151,205 Deferred tax liabilities 205,082 4,098 209,180 Long-term lease liabilities 6,607 — 6,607 Other non-current liabilities 47,733 1,553 49,286 Total liabilities assumed 418,797 6,778 425,575 Total consideration paid for Houghton 1,662,465 — 1,662,465 Less: cash acquired 75,821 — 75,821 Less: fair value of common stock issued as consideration 789,080 — 789,080 Net cash paid for Houghton $ 797,564 $ — $ 797,564
Norman Hay [Member]
Business Acquisition [Line Items]
Schedule of estimated fair values of net assets acquired [Table Text Block]	Measurement October 1, Period October 1, 2019 2019 (1) Adjustments (as adjusted) Cash and cash equivalents $ 18,981 $ — $ 18,981 Accounts receivable 15,471 — 15,471 Inventories 8,213 (49) 8,164 Prepaid expenses and other assets 4,203 138 4,341 Property, plant and equipment 14,981 — 14,981 Right of use lease assets 10,608 — 10,608 Intangible assets 51,088 — 51,088 Goodwill 29,384 (82) 29,302 Total assets purchased 152,929 7 152,936 Long-term debt included current portions 485 — 485 Accounts payable, accrued expenses and other accrued liabilities 13,488 (732) 12,756 Deferred tax liabilities 12,746 905 13,651 Long-term lease liabilities 8,594 — 8,594 Total liabilities assumed 35,313 173 35,486 Total consideration paid for Norman Hay 117,616 (166) 117,450 Less: estimated purchase price settlement (2) 3,287 (3,287) — Less: cash acquired 18,981 — 18,981 Net cash paid for Norman Hay $ 95,348 $ 3,121 $ 98,469
Coral Chemical Company [Member]
Business Acquisition [Line Items]
Schedule of estimated fair values of net assets acquired [Table Text Block]	December 22, 2020 Cash and cash equivalents $ 958 Accounts receivable 8,473 Inventories 4,527 Prepaid expenses and other assets 181 Property, plant and equipment 10,467 Intangible assets 30,300 Goodwill 2,814 Total assets purchased 57,720 Long-term debt included current portions 183 Accounts payable, accrued expenses and other accrued liabilities 3,482 Total liabilities assumed 3,665 Total consideration paid for Coral 54,055 Less: cash acquired 958 Net cash paid for Coral $ 53,097

Business Segments (Tables)	12 Months Ended
Business Segments (Tables)	Dec. 31, 2020
Segment Disclosures [Abstract]
Schedule of information about the performance of the Company's reportable segments, sales and total assets [Table Text Block]	2020 2019 2018 Net sales Americas $ 450,161 $ 392,121 $ 297,601 EMEA 383,187 285,570 216,984 Asia/Pacific 315,299 247,839 192,502 Global Specialty Businesses 269,030 207,973 160,433 Total net sales $ 1,417,677 $ 1,133,503 $ 867,520 2020 2019 2018 Segment assets Americas $ 969,551 $ 926,122 $ 180,037 EMEA 697,821 688,663 149,984 Asia/Pacific 713,004 685,476 205,424 Global Specialty Businesses 511,458 550,055 174,220 Total segment assets $ 2,891,834 $ 2,850,316 $ 709,665
Schedule of information about the performance of the Company's reportable segments, operating earnings [Table Text Block]	2020 2019 2018 Segment operating earnings Americas $ 96,379 $ 78,297 $ 62,686 EMEA 69,163 47,014 36,119 Asia/Pacific 88,356 67,512 53,739 Global Specialty Businesses 79,690 58,881 42,931 Total segment operating earnings 333,588 251,704 195,475 Combination, integration and other acquisition-related expenses (29,790) (35,477) (16,661) Restructuring and related charges (5,541) (26,678) — Fair value step up of inventory sold (226) (11,714) — Indefinite-lived intangible asset impairment (38,000) — — Non-operating and administrative expenses (143,202) (104,572) (83,515) Depreciation of corporate assets and amortization (57,469) (27,129) (7,518) Operating income 59,360 46,134 87,781 Other expense, net (5,618) (254) (642) Interest expense, net (26,603) (16,976) (4,041) Income before taxes and equity in net income of associated companies $ 27,139 $ 28,904 $ 83,098
Schedule of reportable segments' long-lived assets, including certain identifiable assets [Table Text Block]	2020 2019 2018 Segment long-lived assets Americas $ 122,302 $ 139,170 $ 60,745 EMEA 69,344 56,108 23,383 Asia/Pacific 119,233 126,166 26,217 Global Specialty Businesses 59,091 69,184 26,949 Total segment long-lived assets $ 369,970 $ 390,628 $ 137,294
Reconciliation of capital expenditures and depreciation for identifiable assets [Table Text Block]	2020 2019 2018 Capital expenditures Americas $ 6,451 $ 6,404 $ 3,401 EMEA 3,844 3,263 2,081 Asia/Pacific 5,688 3,857 6,059 Global Specialty Businesses 1,918 2,021 1,345 Total segment capital expenditures $ 17,901 $ 15,545 $ 12,886 2020 2019 2018 Depreciation Americas $ 12,322 $ 7,500 $ 4,225 EMEA 6,813 4,560 3,434 Asia/Pacific 4,672 3,458 2,552 Global Specialty Businesses 3,544 2,248 1,985 Total segment depreciation $ 27,351 $ 17,766 $ 12,196

Net Sales and Revenue Recognition (Tables)	12 Months Ended
Net Sales and Revenue Recognition (Tables)	Dec. 31, 2020
Disaggregation Of Revenue [Abstract]
Disaggregation Of Revenue [Table Text Block]	2020 2019 2018 Metal removal fluids 23.9 % 19.9 % 15.4 % Rolling lubricants 21.8 % 21.9 % 25.5 % Hydraulic fluids 13.3 % 13.0 % 13.0 % Net sales for the year ending December 31, 2020 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 163,135 $ 107,880 $ 168,096 $ 439,111 Metalworking and other 287,026 275,307 147,203 709,536 450,161 383,187 315,299 1,148,647 Global Specialty Businesses 154,796 68,164 46,070 269,030 $ 604,957 $ 451,351 $ 361,369 $ 1,417,677 Timing of Revenue Recognized Product sales at a point in time $ 580,663 $ 434,549 $ 352,917 $ 1,368,129 Services transferred over time 24,294 16,802 8,452 49,548 $ 604,957 $ 451,351 $ 361,369 $ 1,417,677 Net sales for the year ending December 31, 2019 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 171,784 $ 100,605 $ 141,870 $ 414,259 Metalworking and other 220,337 184,965 105,969 511,271 392,121 285,570 247,839 925,530 Global Specialty Businesses 149,428 30,115 28,430 207,973 $ 541,549 $ 315,685 $ 276,269 $ 1,133,503 Timing of Revenue Recognized Product sales at a point in time $ 525,802 $ 310,274 $ 269,228 $ 1,105,304 Services transferred over time 15,747 5,411 7,041 28,199 $ 541,549 $ 315,685 $ 276,269 $ 1,133,503 Net sales for the year ending December 31, 2018 Consolidated Americas EMEA Asia/Pacific Total Customer Industries Metals $ 164,263 $ 101,028 $ 120,627 $ 385,918 Metalworking and other 133,338 115,956 71,875 321,169 297,601 216,984 192,502 707,087 Global Specialty Businesses 122,165 16,613 21,655 160,433 $ 419,766 $ 233,597 $ 214,157 $ 867,520 Timing of Revenue Recognized Product sales at a point in time $ 408,402 $ 233,372 $ 206,112 $ 847,886 Services transferred over time 11,364 225 8,045 19,634 $ 419,766 $ 233,597 $ 214,157 $ 867,520

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2020
Leases [Abstract]
Schedule of Maturities of operating lease liabilities [Table Text Block]	December 31, December 31, 2020 2019 Right of use lease assets $ 38,507 $ 42,905 Other accrued liabilities 10,901 11,177 Long-term lease liabilities 27,070 31,273 Total operating lease liabilities $ 37,971 $ 42,450 Weighted average remaining lease term (years) 6.0 6.2 Weighted average discount rate 4.20% 4.21%
Schedule of Company's future minimum rental commitments under operating leases [Table Text Block]	December 31, 2020 For the year ended December 31, 2021 $ 12,342 For the year ended December 31, 2022 8,395 For the year ended December 31, 2023 6,220 For the year ended December 31, 2024 4,610 For the year ended December 31, 2025 3,836 For the year ended December 31, 2026 and beyond 8,141 Total lease payments 43,544 Less: imputed interest (5,573) Present value of lease liabilities $ 37,971

Restructuring Activities (Tables)	12 Months Ended
Restructuring Activities (Tables)	Dec. 31, 2020
Restructuring And Related Activities [Abstract]
Restructuring and Related Costs [Table Text Block]	QH Program Accrued restructuring as of December 31, 2018 $ - Restructuring and related charges 26,678 Cash payments (8,899) Currency translation adjustments 264 Accrued restructuring as of December 31, 2019 18,043 Restructuring and related charges 5,541 Cash payments (15,745) Currency translation adjustments 409 Accrued restructuring as of December 31, 2020 $ 8,248

Share Based Compensation (Tables)	12 Months Ended
Share Based Compensation (Tables)	Dec. 31, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of share-based compensation expense in its Consolidated Statements of Income [Table Text Block]	2020 2019 2018 Stock options $ 1,491 $ 1,448 $ 1,053 Non-vested stock awards and restricted stock units 5,012 3,206 2,459 Non-elective and elective 401(k) matching contribution in stock 3,112 — — Employee stock purchase plan — 84 89 Director stock ownership plan 541 123 123 Performance stock units 840 — — Annual incentive plan (1) — — — Total share-based compensation expense $ 10,996 $ 4,861 $ 3,724 (1) Refer to the section entitled Annual Incentive Plan below for additional information.
Schedule of Stock option activity under all plans [Table Text Block]	Weighted Weighted Average Average Exercise Remaining Aggregate Number of Price Contractual Intrinsic Options (per option) Term (years) Value Options outstanding as of January 1, 2020 144,412 $ 137.15 Options granted 49,115 136.64 Options exercised (83,191) 128.42 Options outstanding as of December 31, 2020 110,336 $ 143.51 5.2 $ 12,015 Options expected to vest after December 31, 2020 92,890 $ 144.86 5.6 $ 9,990 Options exercisable as of December 31, 2020 17,446 $ 136.32 3.4 $ 2,025
Schedule of summary of the Company's outstanding stock options [Table Text Block]	Weighted Average Weighted Weighted Number Remaining Average Number Average Range of of Options Contractual Exercise Price of Options Exercise Price Exercise Prices Outstanding Term (years) (per option) Exercisable (per option) $ 70.01 - $ 80.00 2,133 1.0 $ 72.12 2,133 $ 72.12 $ 80.01 - $ 90.00 1,309 1.0 87.30 1,309 87.30 $ 90.01 - $ 130.00 — — — — — $ 130.01 - $ 140.00 51,732 6.0 136.54 2,617 134.60 $ 140.01 - $ 150.00 — — — — — $ 150.01 - $ 160.00 55,162 4.8 154.14 11,387 154.37 110,336 5.2 143.51 17,446 136.32
Schedule of Black-Scholes option pricing model and the assumptions [Table Text Block]	2020 2019 2018 2017 Number of stock options granted 49,115 51,610 35,842 42,477 Dividend yield 0.99 % 1.12 % 1.37 % 1.49 % Expected volatility 31.57 % 26.29 % 24.73 % 25.52 % Risk-free interest rate 0.36 % 1.52 % 2.54 % 1.67 % Expected term (years) 4.0 4.0 4.0 4.0
Schedule of The compensation expense recorded on each award during the year [Table Text Block]	2020 2019 2018 2020 Stock option awards $ 385 $ — $ — 2019 Stock option awards 698 665 — 2018 Stock option awards 357 364 310 2017 Stock option awards 51 369 367
Schedule of activity of nonvested restricted stock awards granted under the Company's LTIP plan [Table Text Block]	Number of Weighted Average Grant Shares Date Fair Value (per share) Nonvested awards, December 31, 2019 64,500 $ 152.67 Granted 28,244 145.63 Vested (19,195) 148.15 Forfeited (1,781) 150.27 Nonvested awards, December 31, 2020 71,768 $ 151.17
Schedule of activity of nonvested restricted stock units granted under the Company's LTIP plan [Table Text Block]	Number of Weighted Average Grant Units Date Fair Value (per unit) Nonvested awards, December 31, 2019 8,655 $ 152.09 Granted 6,030 141.65 Vested (1,791) 141.92 Forfeited (2,049) 153.50 Nonvested awards, December 31, 2020 10,845 $ 147.70

Other Income (Expense) (Tables)	12 Months Ended
Other Income (Expense) (Tables)	Dec. 31, 2020
Other Income and Expenses [Abstract]
Schedule of other expense, net [Table Text Block]	2020 2019 2018 Income from third party license fees $ 999 $ 1,035 $ 862 Foreign exchange (losses) gains, net (6,082) 223 (807) (Loss) gain on fixed asset disposals, net (871) 58 657 Non-income tax refunds and other related credits 3,345 1,118 668 Pension and postretirement benefit costs, non-service components (21,592) (2,805) (2,285) Gain on changes in insurance settlement restrictions of an inactive subsidiary and related insurance insolvency recovery 18,144 60 90 Other non-operating income, net 439 57 173 Total other expense, net $ (5,618) $ (254) $ (642)

Taxes on Income and Uncertain Positions (Tables)	12 Months Ended
Taxes on Income and Uncertain Positions (Tables)	Dec. 31, 2020
Taxes on Income and Uncertain Tax Positions [Abstract]
Schecule of taxes on income before equity in net income of associated companies [Table Text Block]	2020 2019 2018 Current: Federal $ (1,359) $ (239) $ 6,583 State 1,171 352 (1,844) Foreign 33,173 26,213 12,114 32,985 26,326 16,853 Deferred: Federal (28,437) (9,267) 7,859 State (3,087) (396) (173) Foreign (6,757) (14,579) 511 Total $ (5,296) $ 2,084 $ 25,050
Schedule of components of earnings before income taxes [Table Text Block]	2020 2019 2018 U.S. $ (66,585) $ (46,697) $ 27,387 Foreign 93,724 75,601 55,711 Total $ 27,139 $ 28,904 $ 83,098
Schedule of total deferred tax assets and liabilities [Table Text Block]	2020 2019 Retirement benefits $ 15,237 $ 15,142 Allowance for doubtful accounts 2,316 2,253 Insurance and litigation reserves 842 1,002 Performance incentives 5,914 7,213 Equity-based compensation 1,282 1,050 Prepaid expense 756 2,976 Insurance settlement — 3,895 Operating loss carryforward 16,693 16,044 Foreign tax credit and other credits 24,873 34,384 Interest 16,812 11,479 Restructuring reserves 1,121 2,167 Right of use lease assets 9,346 10,015 Royalties and license fees — 2,156 Inventory reserves 2,225 2,163 Research and development 7,974 2,580 Other 3,005 1,317 108,396 115,836 Valuation allowance (21,511) (13,834) Total deferred tax assets, net $ 86,885 $ 102,002 Depreciation 15,473 17,754 Foreign pension and other 1,807 1,269 Amortization and other 222,794 254,359 Lease liabilities 9,151 9,965 Outside basis in equity investment 7,938 6,776 Unremitted Earnings 5,919 8,228 Total deferred tax liabilities $ 263,082 $ 298,351
Schedule of changes in the Company's deferred tax asset valuation allowance [Table Text Block]	Effect of Balance at Purchase Additional Allowance Exchange Balance Beginning Accounting Valuation Utilization Rate at End of Period Adjustments Allowance and Other Changes of Period Valuation Allowance Year ended December 31, 2020 $ 13,834 $ 7,148 $ 2,738 $ (2,153) $ (56) $ 21,511 Year ended December 31, 2019 $ 7,520 $ 13,752 $ 832 $ (8,227) $ (43) $ 13,834 Year ended December 31, 2018 $ 7,401 $ — $ 650 $ (471) $ (60) $ 7,520
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2020 2019 2018 Income tax provision at the Federal statutory tax rate $ 5,699 $ 6,070 $ 17,458 Unremitted earnings (2,308) (4,383) 7,857 Tax law changes / reform (1,059) (416) (3,118) Sub part F / Global intangible low taxed income 5,140 574 2,095 Pension settlement (2,247) — — Foreign derived intangible income (7,339) (1,699) (1,034) Non-deductible acquisition expenses 131 1,743 1,019 Withholding taxes 7,809 8,621 1,161 Foreign tax credits (4,699) (3,787) (1,911) Share-based compensation 335 (540) 259 Foreign tax rate differential 596 920 1,081 Research and development credit (475) (306) (230) Uncertain tax positions 1,990 899 (79) State income tax provisions, net (2,245) (117) 196 Non-deductible meals and entertainment 290 318 415 Intercompany transfer of intangible assets (4,384) (5,318) — Miscellaneous items, net (2,530) (495) (119) Taxes on income before equity in net income of associated companies $ (5,296) $ 2,084 $ 25,050
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	2020 2019 2018 Unrecognized tax benefits as of January 1 $ 19,097 $ 7,050 $ 6,761 Increase (decrease) in unrecognized tax benefits taken in prior periods 2,025 (28) (183) Increase in unrecognized tax benefits taken in current period 3,095 1,935 2,023 Decrease in unrecognized tax benefits due to lapse of statute of limitations (3,659) (1,029) (1,292) Increase in unrecognized tax benefits due to acquisition 597 11,301 — Increase (decrease) due to foreign exchange rates 997 (132) (259) Unrecognized tax benefits as of December 31 $ 22,152 $ 19,097 $ 7,050
Schedule Of Deferred Tax Assets And Liabilities Balance Sheet Classification [Table Text Block]	2020 2019 Non-current deferred tax assets $ 16,566 $ 14,745 Non-current deferred tax liabilities 192,763 211,094 Net deferred tax liability $ (176,197) $ (196,349)

Earnings Per Share (Tables)	12 Months Ended
Earnings Per Share (Tables)	Dec. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	2020 2019 2018 Basic earnings per common share Net income attributable to Quaker Chemical Corporation $ 39,658 $ 31,622 $ 59,473 Less: income allocated to participating securities (148) (90) (253) Net income available to common shareholders $ 39,510 $ 31,532 $ 59,220 Basic weighted average common shares outstanding 17,719,792 15,126,928 13,268,047 Basic earnings per common share $ 2.23 $ 2.08 $ 4.46 Diluted earnings per common share Net income attributable to Quaker Chemical Corporation $ 39,658 $ 31,622 $ 59,473 Less: income allocated to participating securities (148) (90) (252) Net income available to common shareholders $ 39,510 $ 31,532 $ 59,221 Basic weighted average common shares outstanding 17,719,792 15,126,928 13,268,047 Effect of dilutive securities 31,087 36,243 36,685 Diluted weighted average common shares outstanding 17,750,879 15,163,171 13,304,732 Diluted earnings per common share $ 2.22 $ 2.08 $ 4.45

Restricted Cash (Tables)	12 Months Ended
Restricted Cash (Tables)	Dec. 31, 2020
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Schedule Of Cash And Cash Equivalents [Table Text Block]	2020 2019 2018 2017 Cash and cash equivalents $ 181,833 $ 123,524 $ 104,147 $ 89,879 Restricted cash included in other current assets 62 353 — — Restricted cash included in other assets — 19,678 20,278 21,171 Cash, cash equivalents and restricted cash $ 181,895 $ 143,555 $ 124,425 $ 111,050

AR and Allowance for Doubtful Accounts (Tables)	12 Months Ended
AR and Allowance for Doubtful Accounts (Tables)	Dec. 31, 2020
Accounts Receivable and Allowance for Doubtful Accounts [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Exchange Rate Balance at Changes Write-Offs Changes Balance Beginning to Costs and Charged to and Other at End of Period Expenses Allowance Adjustments of Period Allowance for Doubtful Accounts Year ended December 31, 2020 $ 11,716 $ 3,582 $ (2,187) $ 34 $ 13,145 Year ended December 31, 2019 $ 5,187 $ 1,925 $ (322) $ 4,926 $ 11,716 Year ended December 31, 2018 $ 5,457 $ 493 $ (295) $ (468) $ 5,187

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Dec. 31, 2020
Inventories [Abstract]
Schedule of Inventory, Current [Table Text Block]	2020 2019 Raw materials and supplies $ 86,148 $ 82,058 Work in process, finished goods and reserves 101,616 92,892 Total inventories, net $ 187,764 $ 174,950

Property, Plant and Equipment (Tables)	12 Months Ended
Property, Plant and Equipment (Tables)	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	2020 2019 Land $ 33,009 $ 34,686 Building and improvements 135,595 130,462 Machinery and equipment 246,242 225,636 Construction in progress 8,407 8,050 Property, plant and equipment, at cost 423,253 398,834 Less: accumulated depreciation (219,370) (185,365) Total property, plant and equipment, net $ 203,883 $ 213,469

Goodwill and Intangible Assets (Tables)	12 Months Ended
Goodwill and Intangible Assets (Tables)	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	Global Specialty Americas EMEA Asia/Pacific Businesses Total Balance as of December 31, 2018 $ 28,464 $ 17,423 $ 13,149 $ 24,297 $ 83,333 Goodwill additions 188,494 114,167 130,091 91,545 524,297 Currency translation adjustments (573) 1,428 (1,513) 233 (425) Balance as of December 31, 2019 216,385 133,018 141,727 116,075 607,205 Goodwill additions 1,485 531 — 1,329 3,345 Currency translation and other adjustments (4,628) 6,613 16,363 2,314 20,662 Balance as of December 31, 2020 $ 213,242 $ 140,162 $ 158,090 $ 119,718 $ 631,212
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Gross Carrying Accumulated Amount Amortization 2020 2019 2020 2019 Customer lists and rights to sell $ 839,551 $ 792,362 $ 99,806 $ 49,932 Trademarks, formulations and product technology 166,448 157,049 30,483 21,299 Other 6,372 6,261 5,824 5,776 Total definite -lived intangible assets $ 1,012,371 $ 955,672 $ 136,113 $ 77,007
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	For the year ended December 31, 2021 $ 58,752 For the year ended December 31, 2022 58,590 For the year ended December 31, 2023 58,361 For the year ended December 31, 2024 57,935 For the year ended December 31, 2025 57,263

Investment in Associated Companies (Tables)	12 Months Ended
Investment in Associated Companies (Tables)	Dec. 31, 2020
Investments in Associated Companies [Abstract]
Schedule of Equity Method Investments [Table Text Block]	Year Ended December 31, 2020 2019 2018 Houghton Korea $ 5,241 $ 2,337 $ — Nippon Japan 853 850 713 Kelko Panama 107 55 222 Kelko Venezuela — — (138) Primex 1,151 1,822 966 Total equity in net income of associated companies $ 7,352 $ 5,064 $ 1,763

Other Assets (Tables)	12 Months Ended
Other Assets (Tables)	Dec. 31, 2020
Other Assets [Abstract]
Schedule of Other Assets, Noncurrent [Table Text Block]	2020 2019 Uncertain tax positions $ 7,209 $ 4,993 Pension assets 6,748 — Debt issuance costs 5,919 7,571 Indemnification assets 7,615 4,006 Supplemental retirement income program 1,961 1,782 Restricted insurance settlement — 19,678 Other 2,344 2,403 Total other assets $ 31,796 $ 40,433

Other Current Liabilities (Tables)	12 Months Ended
Other Current Liabilities (Tables)	Dec. 31, 2020
Other Accrued Liabilities [Abstract]
Schedule of Accrued Liabilities [Table Text Block]	2020 2019 Non-income taxes $ 26,080 $ 21,176 Current income taxes payable 13,124 7,503 Professional fees, legal, and acquisition-related accruals 11,437 17,103 Short-term lease liabilities 10,901 11,177 Selling expenses and freight accruals 10,475 11,350 Customer advances and sales return reserves 6,380 5,554 Other 13,710 9,742 Total other accrued liabilities $ 92,107 $ 83,605

Debt (Tables)	12 Months Ended
Debt (Tables)	Dec. 31, 2020
Debt [Abstract]
Schedule of Debt [Table Text Block]	As of December 31, 2020 As of December 31, 2019 Interest Outstanding Interest Outstanding Rate Balance Rate Balance Credit Facilities: Revolver 1.65% $ 160,000 3.20% $ 171,169 U.S. Term Loan 1.65% 570,000 3.20% 600,000 EURO Term Loan 1.50% 157,062 1.50% 151,188 Industrial development bonds 5.26% 10,000 5.26% 10,000 Bank lines of credit and other debt obligations Various 2,072 Various 2,608 Total debt $ 899,134 $ 934,965 Less: debt issuance costs (11,099) (14,196) Less: short-term and current portion of long-term debts (38,967) (38,332) Total long -term debt $ 849,068 $ 882,437
Schedule of Maturities of Long-term Debt [Table Text Block]	2021 $ 38,795 2022 57,850 2023 76,943 2024 715,227 2025 231
Interest Income And Interest Expense Disclosure [Table Text Block]	Year Ended December 31, 2020 2019 2018 Interest expense $ 23,552 $ 16,788 $ 6,158 Amortization of debt issuance costs 4,749 1,979 70 Total $ 28,301 $ 18,767 $ 6,228

Pension and Other Post Retirement Benefits (Tables)	12 Months Ended
Pension and Other Post Retirement Benefits (Tables)	Dec. 31, 2020
Pension and Other Postretirement Benefits [Abstract]
Scheudule of funded status of Company'ds plans' reconciled with amounts reported in the Consolidated Balance Sheets [Table Text Block]	Other Post- Pension Benefits Retirement Benefits 2020 2019 2020 2019 Foreign U.S. Total Foreign U.S. Total U.S. U.S. Change in benefit obligation Gross benefit obligation at beginning of year $ 217,893 $ 153,723 $ 371,616 $ 111,316 $ 58,734 $ 170,050 $ 4,266 $ 4,106 Service cost 4,340 491 4,831 3,507 434 3,941 5 6 Interest cost 3,416 2,923 6,339 3,046 3,313 6,359 77 143 Employee contributions 73 — 73 73 — 73 — — Effect of plan amendments — 50 50 30 — 30 — — Curtailment gain (2,324) — (2,324) — — — — — Plan settlements (2,316) (53,494) (55,810) (1,087) — (1,087) — — Benefits paid (5,087) (6,138) (11,225) (3,832) (6,034) (9,866) (250) (384) Plan expenses and premiums paid (135) — (135) (129) — (129) — — Transfer in of business acquisition — — — 85,658 86,414 172,072 — — Actuarial loss (gain) 16,834 12,414 29,248 13,616 10,862 24,478 (864) 395 Translation differences and other 14,981 — 14,981 5,695 — 5,695 — — Gross benefit obligation at end of year $ 247,675 $ 109,969 $ 357,644 $ 217,893 $ 153,723 $ 371,616 $ 3,234 $ 4,266 Other Post- Pension Benefits Retirement Benefits 2020 2019 2020 2019 Foreign U.S. Total Foreign U.S. Total U.S. U.S. Change in plan assets Fair value of plan assets at beginning of year $ 195,099 $ 120,550 $ 315,649 $ 94,826 $ 49,415 $ 144,241 $ — $ — Actual return on plan assets 20,367 10,759 31,126 13,458 10,663 24,121 — — Employer contributions 6,912 2,302 9,214 5,223 1,087 6,310 250 384 Employee contributions 73 — 73 73 — 73 — — Plan settlements (2,316) (53,494) (55,810) (1,087) — (1,087) — — Benefits paid (5,087) (6,138) (11,225) (3,832) (6,034) (9,866) (250) (384) Plan expenses and premiums paid (135) (498) (633) (129) (500) (629) — — Transfer in of business acquisition — — — 81,068 65,919 146,987 — — Translation differences 13,876 — 13,876 5,499 — 5,499 — — Fair value of plan assets at end of year $ 228,789 $ 73,481 $ 302,270 $ 195,099 $ 120,550 $ 315,649 $ — $ — Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266) Amounts recognized in the balance sheet consist of: Non-current assets $ 6,748 $ — $ 6,748 $ — $ — $ — $ — $ — Current liabilities (568) (612) (1,180) (359) (2,620) (2,979) (286) (426) Non-current liabilities (25,066) (35,876) (60,942) (22,435) (30,553) (52,988) (2,948) (3,840) Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266) Amounts not yet reflected in net periodic benefit costs and included in accumulated other comprehensive loss: Prior service credit (26) 50 24 1,271 — 1,271 — — Accumulated loss (21,976) (5,532) (27,508) (22,816) (46,560) (69,376) 124 (734) AOCI (22,002) (5,482) (27,484) (21,545) (46,560) (68,105) 124 (734) Cumulative employer contributions (below) or in excess of net periodic benefit cost 3,116 (31,006) (27,890) (1,249) 13,387 12,138 (3,358) (3,532) Net benefit obligation recognized $ (18,886) $ (36,488) $ (55,374) $ (22,794) $ (33,173) $ (55,967) $ (3,234) $ (4,266)
Schedule of Information for pension plans with an accumulated benefit obligation in excess of plan assets [Table Text Block]	2020 2019 Foreign U.S. Total Foreign U.S. Total Projected benefit obligation $ 32,373 $ 109,969 $ 142,342 $ 217,893 $ 153,723 $ 371,616 Accumulated benefit obligation 30,892 109,540 140,432 213,060 152,930 365,990 Fair value of plan assets 18,074 73,481 91,555 195,099 120,550 315,649
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]	2020 2019 Foreign U.S. Total Foreign U.S. Total Projected benefit obligation $ 32,373 $ 109,969 $ 142,342 $ 217,893 $ 153,723 $ 371,616 Fair value of plan assets 18,074 73,481 91,555 195,099 120,550 315,649
Defined Benefit Plan Disclosure [Line Items]
Schedule of Weighted-average assumptions used to determine benefit obligations [Table Text Block]	Other Postretirement Pension Benefits Benefits 2020 2019 2020 2019 U.S. Plans: Discount rate 2.19 % 3.06 % 2.05 % 2.98 % Rate of compensation increase 6.00 % 6.00 % N/A N/A Foreign Plans: Discount rate 1.79 % 1.83 % N/A N/A Rate of compensation increase 2.74 % 2.58 % N/A N/A Other Postretirement Pension Benefits Benefits 2020 2019 2020 2019 U.S. Plans: Discount rate 3.11 % 4.08 % 2.99 % 4.03 % Expected long-term return on plan assets 6.50 % 5.75 % N/A N/A Rate of compensation increase 6.00 % 5.50 % N/A N/A Foreign Plans: Discount rate 2.30 % 2.30 % N/A N/A Expected long-term return on plan assets 2.20 % 3.13 % N/A N/A Rate of compensation increase 2.79 % 2.87 % N/A N/A
Schedule of Assumed health care cost trend rates [Table Text Block]	2020 2019 Health care cost trend rate for next year 5.70 % 5.90 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50 % 4.50 % Year that the rate reaches the ultimate trend rate 2037 2037
Schedule of compan's pension plan target asset allocation and pension plan investments measured at fair value on a recurring basis [Table Text Block]	Asset Category Target 2020 2019 U.S. Plans Equity securities 10 % 58 % 32 % Debt securities 90 % 36 % 64 % Other 0 % 6 % 4 % Total 100 % 100 % 100 % Foreign Plans Equity securities 37 % 33 % 34 % Debt securities 53 % 45 % 45 % Other 10 % 22 % 21 % Total 100 % 100 % 100 % Fair Value Measurements at December 31, 2020 Total Using Fair Value Hierarchy U.S. Pension Assets Fair Value Level 1 Level 2 Level 3 Pooled separate accounts $ 69,385 $ — $ 69,385 $ — Real estate 4,096 — — 4,096 Subtotal U.S. pension plan assets in fair value hierarch y $ 73,481 $ — $ 69,385 $ 4,096 Total U.S. pension plan assets $ 73,481 Foreign Pension Assets Cash and cash equivalents $ 634 $ 634 $ — $ — Insurance contract 112,920 — — 112,920 Diversified equity securities - registered investment companies 8,851 — 8,851 — Fixed income – foreign registered investment companies 3,711 — 3,711 — Fixed income government securities 37,579 — 37,579 — Real estate 5,679 — — 5,679 Other - alternative investments 10,638 — — 10,638 Sub-total of foreign pension assets in fair value hierarchy $ 180,012 $ 634 $ 50,141 $ 129,237 Commingled funds measured at NAV 2,368 Diversified investment fund - registered investment companies measured at NAV 46,409 Total foreign pension assets $ 228,789 Total pension assets in fair value hierarchy $ 253,493 $ 634 $ 119,526 $ 133,333 Total pension assets measured at NAV 48,777 Total pension assets $ 302,270 Fair Value Measurements at December 31, 2019 Total Using Fair Value Hierarchy U.S. Pension Assets Fair Value Level 1 Level 2 Level 3 Cash and cash equivalents $ 450 $ 450 $ — $ — Pooled separate accounts 64,636 — 64,636 — Real estate 4,060 — — 4,060 Subtotal U.S. pension plan assets in fair value hierarch y $ 69,146 $ 450 $ 64,636 $ 4,060 Commingled funds measured at NAV 51,404 Total U.S. pension plan assets $ 120,550 Foreign Pension Assets Cash and cash equivalents $ 1,502 $ 1,502 $ — $ — Insurance contract 92,657 — — 92,657 Diversified equity securities - registered investment companies 8,604 — 8,604 — Fixed income – foreign registered investment companies 3,021 — 3,021 — Fixed income government securities 32,512 — 32,512 — Real estate 5,521 — — 5,521 Other - alternative investments 9,436 — — 9,436 Sub-total of foreign pension assets in fair value hierarchy $ 153,253 $ 1,502 $ 44,137 $ 107,614 Commingled funds measured at NAV 2,037 Diversified investment fund - registered investment companies measured at NAV 39,809 Total foreign pension assets $ 195,099 Total pension assets in fair value hierarchy $ 222,399 $ 1,952 $ 108,773 $ 111,674 Total pension assets measured at NAV 93,250 Total pension assets $ 315,649
Schedule of changes in the fair value of the plans' Level 3 investments [Table Text Block]	Insurance Alternative Contract Real Estate Investments Total Balance as of December 31, 2018 $ 79,873 2,382 — $ 82,255 Purchases 3,762 — 1,029 4,791 Assets acquired in business combinations 129 7,058 8,914 16,101 Sales — (238) (278) (516) Settlements (1,730) — — (1,730) Unrealized (losses) gains 12,199 403 (960) 11,642 Currency translation adjustment (1,576) (24) 731 (869) Balance as of December 31, 2019 92,657 9,581 9,436 111,674 Purchases 3,902 18 989 4,909 Settlements (2,027) — — (2,027) Unrealized gains (losses) 8,917 (16) (171) 8,730 Currency translation adjustment 9,471 192 384 10,047 Balance as of December 31, 2020 $ 112,920 $ 9,775 $ 10,638 $ 133,333
Schedule of Expected Benefit Payments [Table Text Block]	Other Post- Pension Benefits Retirement Foreign U.S. Total Benefits 2021 $ 6,658 $ 5,923 $ 12,581 $ 286 2022 6,939 5,298 12,237 278 2023 7,024 6,072 13,096 265 2024 6,745 6,234 12,979 245 2025 7,394 6,228 13,622 226 2025 to 2029 42,522 30,443 72,965 923
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of components of net periodic benefit costs - pension plans [Table Text Block]	2020 2019 Foreign U.S. Total Foreign U.S. Total Service cost $ 4,340 $ 491 $ 4,831 $ 3,507 $ 434 $ 3,941 Interest cost 3,416 2,923 6,339 3,046 3,313 6,359 Expected return on plan assets (4,262) (4,810) (9,072) (3,668) (3,227) (6,895) Settlement loss (88) 22,667 22,579 258 — 258 Curtailment charge (1,155) — (1,155) — — — Actuarial loss amortization 886 2,110 2,996 757 2,348 3,105 Prior service (credit) cost amortization (167) — (167) (165) — (165) Net periodic benefit cost $ 2,970 $ 23,381 $ 26,351 $ 3,735 $ 2,868 $ 6,603 2018 Foreign U.S. Total Service cost $ 3,426 $ 383 $ 3,809 Interest cost 2,254 1,847 4,101 Expected return on plan assets (2,228) (2,803) (5,031) Settlement loss 2 — 2 Actuarial loss amortization 881 2,276 3,157 Prior service (credit) cost amortization (175) 59 (116) Net periodic benefit cost $ 4,160 $ 1,762 $ 5,922
Schedule of other changes recognized in other comprehensive income - pension plans [Table Text Block]	2020 2019 Foreign U.S. Total Foreign U.S. Total Net (gain) loss arising during the period $ (1,594) $ 1,536 $ (58) $ 3,826 $ 3,926 $ 7,752 Effect of plan amendment Recognition of amortization in net periodic benefit cost Settlement (loss) (39) (22,667) (22,706) — — — Prior service credit (cost) 1,325 50 1,375 196 — 196 Actuarial loss (758) 3,967 3,209 (1,015) (2,347) (3,362) Curtailment Recognition (3) — (3) — — — Effect of exchange rates on amounts included in AOCI 1,535 — 1,535 (61) — (61) Total recognized in other comprehensive loss (income) 466 (17,114) (16,648) 2,946 1,579 4,525 Total recognized in net periodic benefit cost and other comprehensive loss (income) $ 3,436 $ 6,267 $ 9,703 $ 6,681 $ 4,447 $ 11,128 2018 Foreign U.S. Total Net gain arising during period $ (663) $ 453 $ (210) Recognition of amortization in net periodic benefit cost Prior service credit (cost) 175 (59) 116 Actuarial loss (883) (2,276) (3,159) Effect of exchange rates on amounts included in AOCI (890) — (890) Total recognized in other comprehensive loss (2,261) (1,882) (4,143) Total recognized in net periodic benefit cost and other comprehensive loss $ 1,899 $ (120) $ 1,779
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of components of net periodic benefit costs - pension plans [Table Text Block]	2020 2019 2018 Service cost $ 5 $ 6 $ 7 Interest cost 77 143 130 Actuarial loss amortization (5) — 42 Net periodic benefit costs $ 77 $ 149 $ 179
Schedule of other changes recognized in other comprehensive income - pension plans [Table Text Block]	2020 2019 2018 Net (gain) loss arising during period $ (864) $ 395 $ (443) Amortization of actuarial loss in net periodic benefit costs 5 — (42) Total recognized in other comprehensive (income) loss (859) 395 (485) Total recognized in net periodic benefit cost and other comprehensive (income) loss $ (782) $ 544 $ (306)

Other Non-Current Liabilities (Tables)	12 Months Ended
Other Non-Current Liabilities (Tables)	Dec. 31, 2020
Other Liabilities Noncurrent [Abstract]
Schedule of Other Non-Current Liabilities [Table Text Block]	2020 2019 Inactive subsidiary litigation and settlement reserve $ 542 $ 19,678 Non-current income taxes payable 8,500 8,500 Uncertain tax positions (includes interest and penalties) 28,961 24,609 Fair value of interest rate swaps 4,672 415 Environmental reserves 4,610 5,259 Deferred and other long-term compensation 6,257 6,625 Other 1,627 1,298 Total other non-current liabilities $ 55,169 $ 66,384

Equity and Noncontrolling Interest (Tables)	12 Months Ended
Equity and Noncontrolling Interest (Tables)	Dec. 31, 2020
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Defined Unrealized Gain (Loss) in Currency Benefit Translation Pension Available-for - Derivative Adjustments Plans Sale Securities Instruments Total Balance as of December 31, 2017 $ (31,893) $ (34,093) $ 886 $ — $ (65,100) Other comprehensive (loss) income before reclassifications (17,429) 1,543 (2,622) — (18,508) Amounts reclassified from AOCI — 3,085 435 — 3,520 Related tax amounts — (1,086) 459 — (627) Balance as of December 31, 2018 (49,322) (30,551) (842) — (80,715) Other comprehensive income (loss) before reclassifications 4,754 (8,088) 2,951 (415) (798) Amounts reclassified from AOCI — 3,169 (301) — 2,868 Related tax amounts — 937 (557) 95 475 Balance as of December 31, 2019 (44,568) (34,533) 1,251 (320) (78,170) Other comprehensive income (loss) before reclassifications 41,693 (6,617) 2,848 (4,257) 33,667 Amounts reclassified from AOCI — 24,141 (202) — 23,939 Related tax amounts — (6,458) (555) 979 (6,034) Balance as of December 31, 2020 $ (2,875) $ (23,467) $ 3,342 $ (3,598) $ (26,598)

Fair Value Measurements (Table)	12 Months Ended
Fair Value Measurements (Table)	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Fair Value Measurements at December 31, 2020 Total Using Fair Value Hierarchy Assets Fair Value Level 1 Level 2 Level 3 Company-owned life insurance $ 1,961 $ — $ 1,961 $ — Total $ 1,961 $ — $ 1,961 $ — Fair Value Measurements at December 31, 2019 Total Using Fair Value Hierarchy Assets Fair Value Level 1 Level 2 Level 3 Company-owned life insurance $ 1,782 $ — $ 1,782 $ — Total $ 1,782 $ — $ 1,782 $ —

Hedging Activities (Tables)	12 Months Ended
Hedging Activities (Tables)	Dec. 31, 2020
General Discussion Of Derivative Instruments And Hedging Activities [Abstract]
Scheudule of fair values of the Company''s derivative instruments, Level 2 measurements [Table Text Block]	Fair Value Consolidated Balance Sheet December 31, Location 2020 2019 Derivatives designated as cash flow hedges: Interest rate swaps Other non-current liabilities $ 4,672 $ 415 $ 4,672 $ 415 December 31, 2020 2019 Derivatives designated as cash flow hedges: Interest rate swaps AOCI $ 3,598 $ 320 $ 3,598 $ 320 For the Years Ended December 31, 2020 2019 2018 Amount and location of (expense) income reclassified from AOCI into (expense) income (Effective Portion) Interest expense, net $ (1,754) $ 29 $ —

Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Abstract]
Research and Development Expense	$ 40,000	$ 32,100	$ 24,500
Cash and cash equivalents description	The Company invests temporary and excess funds in money market securities and financial instruments having maturities within 90 days. The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents.
Schedule Of Equity Method Investments [Line Items]
Deferred tax liabilities,net	$ 192,763	211,094
Retained earnings	$ 423,940	$ 412,979
Income Tax Examination Minimum Likelihood Of Tax Benefits Being Realized Upon Ultimate Settlement	50.00%

Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Capitalized Computer Software, Net	$ 2.3	$ 2.6
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	45 years
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year
Software Development [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Software Development [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years

Significant Accounting Policies - Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2020
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years

Significant Accounting Policies - Concentration Risk (Details)	12 Months Ended
	Dec. 31, 2020
Top Customer Concentration Risk [Member] \| Sales Revenue Net [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	3.00%

Significant Accounting Policies - Share-Based Compensation (Details)	12 Months Ended
	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	3 years
Forfeiture rate, Nonvested Stock Awards	13.00%
Employee Stock Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	3 years
Options, Maximum Exercisable Life	7 years
Restricted Stock LTIP [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	1 year
Annual Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	5 years
Annual Incentive Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	2 years
Restricted Stock Units (RSUs) LTIP Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Award Vesting Period	3 years

Siginficant Accounting Policies - Hyperinflationary accounting (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Inflationary Percentage	100.00%
Equity Method Investments	$ 95,785,000	$ 93,822,000
Kelko Quaker Chemical S.A [Member]
Concentration Risk [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 0	0
Argentina [Member]
Concentration Risk [Line Items]
Amount Recognized In Income Due To Inflationary Accounting	$ 400,000	$ 1,000,000.0	$ 700,000
Currency Conversion Impacts Of HyperInflationary Accounting	During the years ended December 31, 2020, 2019 and 2018, the Company recorded $0.4 million, $1.0 million, and $0.7 million, respectively, of remeasurement losses associated with the applicable currency conversions related to Venezuela and Argentina.
Inflationary Percentage	100.00%
Assets Total [Member] \| Argentina [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	1.00%
Sales Revenue Net [Member] \| Argentina [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	1.00%

Business Combination - Houghton (Details) $ / shares in Units, $ in Thousands, shares in Millions		12 Months Ended
	Aug. 01, 2019 USD ($) $ / shares shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed		$ 30,300	$ 38,000	$ 19,500
Business Combination Separately Recognized Transactions Liabilities Recognized		$ 7,500	6,600
Business Combination, Consideration Transferred [Abstract]
Fair value of common stock issued as consideration			$ 789,080
Houghton [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	Aug. 01, 2019
Business Combination, Consideration Transferred [Abstract]
Cash transferred to Houghton shareholders	$ 170,829
Cash paid to extinguish Houghton debt obligation	702,556
Fair value of common stock issued as consideration	789,080
Total fair value of consideration transferred	$ 1,662,465
Business Acquisitions, Shares Acquired \| shares	4.3
Business Acquisition Share Price \| $ / shares	$ 182.27
Houghton [Member] \| Disposal Group, Not Discontinued Operations [Member] \| Certain steel and aluminum related product lines [Member]
Business Acquisition [Line Items]
Proceeds From Divestiture Of Businesses	$ 37,000
Divested product lines impact on Net Sales, percent	0.03

Business Combination - Houghton - Estimated Fair Values of Houghton Net Assets Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 631,212	$ 607,205	$ 83,333
Less: Fair value of common stock issued as consideration			789,080
Net cash paid for Norman Hay		$ 56,230	$ 893,412	$ 500
Houghton [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	$ 75,821
Accounts receivable, net	178,922
Inventories, net	95,193
Prepaid expenses and other assets	11,318
Propery, plant & equipment	115,463
Right of use lease assets	10,673
Investments in associated companies	66,447
Other non-current assets	6,263
Intangible assets	1,028,400
Goodwill	499,540
Total Assets Purchased	2,088,040
Short-term borrowings, not refinanced at closing	9,297
Accounts payable, accrued expenses and other accrued liabilities	151,205
Long-term lease liabilities	6,607
Other Non-Current Liabilities	49,286
Deferred tax liabilities	209,180
Total Liabilities Assumed	425,575
Less: cash Acquired	75,821
Total consideration paid for Houghton	1,662,465
Less: Fair value of common stock issued as consideration	789,080
Net cash paid for Norman Hay	797,564
Houghton [Member] \| As initially Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	75,821
Accounts receivable, net	178,922
Inventories, net	95,193
Prepaid expenses and other assets	10,652
Propery, plant & equipment	115,529
Right of use lease assets	10,673
Investments in associated companies	66,447
Other non-current assets	4,710
Intangible assets	1,028,400
Goodwill	494,915
Total Assets Purchased	2,081,262
Short-term borrowings, not refinanced at closing	9,297
Accounts payable, accrued expenses and other accrued liabilities	150,078
Long-term lease liabilities	205,082
Other Non-Current Liabilities	6,607
Deferred tax liabilities	47,733
Total Liabilities Assumed	418,797
Less: cash Acquired	75,821
Total consideration paid for Houghton	1,662,465
Less: Fair value of common stock issued as consideration	789,080
Net cash paid for Norman Hay	797,564
Houghton [Member] \| Measurement period adjustments [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	0
Accounts receivable, net	0
Inventories, net	0
Prepaid expenses and other assets	666
Propery, plant & equipment	(66)
Right of use lease assets	0
Investments in associated companies	0
Other non-current assets	1,553
Intangible assets	0
Goodwill	4,625
Total Assets Purchased	6,778
Short-term borrowings, not refinanced at closing	0
Accounts payable, accrued expenses and other accrued liabilities	1,127
Long-term lease liabilities	0
Other Non-Current Liabilities	1,553
Deferred tax liabilities	4,098
Total Liabilities Assumed	6,778
Less: cash Acquired	0
Total consideration paid for Houghton	0
Less: Fair value of common stock issued as consideration	0
Net cash paid for Norman Hay	$ 0

Business Combination - Houghton - Narrative and Pro Forma Information (Details) - USD ($) $ in Thousands			12 Months Ended
	Aug. 01, 2019	Aug. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill			$ 631,212	$ 607,205	$ 83,333
Business Combination Transaction-related Expenses			30,300	38,000	19,500
Business Combination Separately Recognized Transactions Liabilities Recognized			7,500	6,600
Other accrued liabilities			$ 92,107	83,605
Houghton [Member]
Business Acquisition [Line Items]
Percentage of Voting Interests Acquired	24.50%	24.50%
Intangible assets	$ 1,028,400	$ 1,028,400
Goodwill	499,540	499,540
Revenue of Acquiree		$ 299,800
Measurement period		1 year
Business Acquisition Pro Forma Information [Abstract]
Business Acquisitions Pro Forma Revenue				1,562,427	1,654,588
Net income attributable to Quaker Chemical Corporation				$ 94,537	$ 35,337
Houghton [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 677,300	$ 677,300
Houghton [Member] \| Customer Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	15 years
Houghton [Member] \| Customer Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	18 years
Houghton [Member] \| Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets	$ 242,000	242,000
Houghton [Member] \| Trademarks Formulations And Product Technology [Member]
Business Acquisition [Line Items]
Intangible assets	$ 109,100	$ 109,100
Intangible Assets, Amortizable Life	20 years
Korea Houghton Coporation [Member]
Business Acquisition [Line Items]
Percentage of Voting Interests Acquired				50.00%

Business Combination - Norman Hay - Narrative (Details) $ in Thousands, £ in Millions			3 Months Ended	12 Months Ended
	Oct. 01, 2019 GBP (£)	Oct. 01, 2019 USD ($)	Mar. 31, 2020 GBP (£)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 631,212	$ 607,205	$ 83,333
Norman Hay [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement				Oct. 01, 2019
Business Acquisition Name Of Acquired Entity	Norman Hay plc	Norman Hay plc
Purchase price	£ 80.0	$ 117,450
Post Closing Adjustment \| £			£ 2.5
Intangible assets		51,088
Goodwill		$ 29,302
Measurement period	1 year	1 year
Norman Hay [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets		$ 36,900
Norman Hay [Member] \| Customer Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	13 years	13 years
Norman Hay [Member] \| Customer Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	17 years	17 years
Norman Hay [Member] \| Product technology [Member]
Business Acquisition [Line Items]
Intangible assets		$ 7,500
Intangible Assets, Amortizable Life	20 years	20 years
Norman Hay [Member] \| Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets		$ 6,300
Norman Hay [Member] \| Trademarks [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	16 years	16 years
Norman Hay [Member] \| Trademarks [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	17 years	17 years
Norman Hay [Member] \| Noncompete Agreements [Member]
Business Acquisition [Line Items]
Intangible assets		$ 400
Norman Hay [Member] \| Noncompete Agreements [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	2 years	2 years
Norman Hay [Member] \| Noncompete Agreements [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	11 years	11 years

Business Combination - Norman Hay - Estimated Fair Values of Norman Hay Net Assets Acquired (Details) $ in Thousands, £ in Millions	Oct. 01, 2019 GBP (£)	Oct. 01, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 631,212	$ 607,205	$ 83,333
Norman Hay [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		$ 18,981
Accounts receivable, net		15,471
Inventories, net		8,164
Prepaid expenses and other assets		4,341
Propery, plant & equipment		14,981
Right of use lease assets		10,608
Intangible assets		51,088
Goodwill		29,302
Total Assets Purchased		152,936
Long-term debt included current portions		485
Accounts payable, accrued expenses and other accrued liabilities		12,756
Deferred tax liabilities		13,651
Long-term lease liabilities		8,594
Total Liabilities Assumed		35,486
Total fair value of consideration transferred	£ 80.0	117,450
Estimated purchase price settlement		0
Less: cash Acquired		18,981
Net cash paid		98,469
Norman Hay [Member] \| As initially Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		18,981
Accounts receivable, net		15,471
Inventories, net		8,213
Prepaid expenses and other assets		4,203
Propery, plant & equipment		14,981
Right of use lease assets		10,608
Intangible assets		51,088
Goodwill		29,384
Total Assets Purchased		152,929
Long-term debt included current portions		485
Accounts payable, accrued expenses and other accrued liabilities		13,488
Deferred tax liabilities		12,746
Long-term lease liabilities		8,594
Total Liabilities Assumed		35,313
Total fair value of consideration transferred		117,616
Estimated purchase price settlement		3,287
Less: cash Acquired		18,981
Net cash paid		95,348
Norman Hay [Member] \| Measurement period adjustments [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		0
Accounts receivable, net		0
Inventories, net		(49)
Prepaid expenses and other assets		138
Propery, plant & equipment		0
Right of use lease assets		0
Intangible assets		0
Goodwill		(82)
Total Assets Purchased		7
Long-term debt included current portions		0
Accounts payable, accrued expenses and other accrued liabilities		(732)
Deferred tax liabilities		905
Long-term lease liabilities		0
Total Liabilities Assumed		173
Total fair value of consideration transferred		(166)
Estimated purchase price settlement		(3,287)
Less: cash Acquired		0
Net cash paid		$ 3,121

Business Combination - Coral- Estimated Fair Values of Houghton Net Assets Acquired (Details) - USD ($) $ in Thousands	Dec. 22, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 631,212	$ 607,205	$ 83,333
Coral Chemical Company [Member]
Business Acquisition [Line Items]
Intangible assets	$ 30,300
Goodwill	2,800
Total fair value of consideration transferred	54,100
Coral Chemical Company [Member] \| As initially Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	958
Accounts receivable, net	8,473
Inventories, net	4,527
Prepaid expenses and other assets	181
Propery, plant & equipment	10,467
Intangible assets	30,300
Goodwill	2,814
Total Assets Purchased	57,720
Long-term debt included current portions	183
Accounts payable, accrued expenses and other accrued liabilities	3,482
Business Acquisition, Purchase Price Allocation, Liabilities Assumed	3,665
Total fair value of consideration transferred	54,055
Less: cash Acquired	958
Net cash paid	$ 53,097

Business Combination - Coral - Narrative (Details) - USD ($) $ in Thousands	Dec. 22, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 631,212	$ 607,205	$ 83,333
Coral Chemical Company [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	Dec. 22, 2020
Business Acquisition Name Of Acquired Entity	Coral Chemical Company
Purchase price	$ 54,100
Intangible assets	30,300
Goodwill	$ 2,800
Measurement period	1 year
Coral Chemical Company [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 22,000
Coral Chemical Company [Member] \| Customer Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	21 years
Coral Chemical Company [Member] \| Customer Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	24 years
Coral Chemical Company [Member] \| Product technology [Member]
Business Acquisition [Line Items]
Intangible assets	$ 4,700
Coral Chemical Company [Member] \| Product technology [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	14 years
Coral Chemical Company [Member] \| Product technology [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	15 years
Coral Chemical Company [Member] \| Trademarks and Formulations [Member]
Business Acquisition [Line Items]
Intangible assets	$ 3,600
Intangible Assets, Amortizable Life	17 years

Business Combination - Other Acquisitions - Narrative (Details) $ in Thousands, kr in Millions, R in Millions	1 Months Ended	3 Months Ended					12 Months Ended
	Mar. 31, 2018 USD ($)	Jun. 30, 2020 DKK (kr)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2020 ZAR (R)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Payments related to acquisitions, net of cash acquired							$ 56,230	$ 893,412	$ 500
Goodwill, Acquired During Period							3,345	$ 524,297
Tel Nordic ApS[Member]
Business Acquisition [Line Items]
Intangible assets			$ 2,400
Intangible Assets, Amortizable Life		17 years	17 years
Payments related to acquisitions, net of cash acquired		kr 20.0	$ 2,900
Goodwill, Acquired During Period			500
Post Closing Adjustment		kr 0.4	$ 100
South Africa Equity Affiliate [Member]
Business Acquisition [Line Items]
Payments related to acquisitions, net of cash acquired				$ 1,000	R 16.7
Adjustments To Additional Paid In Capital Other				$ 700
Equity Method Investment Ownership Percentage				49.00%	49.00%
Mining North America Trademarks Formulations And Product Technology [Member]
Business Acquisition [Line Items]
Intangible Assets, Amortizable Life	10 years
Payments related to acquisitions, net of cash acquired	$ 1,000
Cash Paid for Acquisitions	$ 500					$ 500
Tin Plating Solutions [Member]
Business Acquisition [Line Items]
Payments related to acquisitions, net of cash acquired							$ 25,000

Recently Issued Accounting Standards - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for doubtful accounts	$ 13,145		$ 11,716	$ 5,187	$ 5,457
Deferred tax liabilities	176,197		196,349
Retained earnings	$ 423,940		$ 412,979
ASU 2016-13 [Member] \| Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for doubtful accounts		$ 1,100
Deferred tax liabilities		200
Retained earnings		$ 900

Segments Table (Details) - USD ($) $ in Thousands	12 Months Ended
Segments Table (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 1,417,677	$ 1,133,503	$ 867,520
Operating Earnings, Excluding Indirect Operating Expenses	333,588	251,704	195,475
Segment assets	2,891,834	2,850,316	709,665
Long-Lived Assets	369,970	390,628	137,294
Capital Expenditures	17,901	15,545	12,886
Depreciation	27,351	17,766	12,196
Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	269,030	207,973	160,433
Operating Earnings, Excluding Indirect Operating Expenses	79,690	58,881	42,931
Segment assets	511,458	550,055	174,220
Long-Lived Assets	59,091	69,184	26,949
Capital Expenditures	1,918	2,021	1,345
Depreciation	3,544	2,248	1,985
Americas [Member]
Segment Reporting Information [Line Items]
Net sales	450,161	392,121	297,601
Operating Earnings, Excluding Indirect Operating Expenses	96,379	78,297	62,686
Segment assets	969,551	926,122	180,037
Long-Lived Assets	122,302	139,170	60,745
Capital Expenditures	6,451	6,404	3,401
Depreciation	12,322	7,500	4,225
EMEA [Member]
Segment Reporting Information [Line Items]
Net sales	383,187	285,570	216,984
Operating Earnings, Excluding Indirect Operating Expenses	69,163	47,014	36,119
Segment assets	697,821	688,663	149,984
Long-Lived Assets	69,344	56,108	23,383
Capital Expenditures	3,844	3,263	2,081
Depreciation	6,813	4,560	3,434
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net sales	315,299	247,839	192,502
Operating Earnings, Excluding Indirect Operating Expenses	88,356	67,512	53,739
Segment assets	713,004	685,476	205,424
Long-Lived Assets	119,233	126,166	26,217
Capital Expenditures	5,688	3,857	6,059
Depreciation	4,672	3,458	2,552
Non Domestic [Member]
Segment Reporting Information [Line Items]
Net sales	963,200	719,800	534,600
Long-Lived Assets	176,600	174,400	60,800
Intersegment Elimination [Member] \| Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	4,700	5,400	5,300
Intersegment Elimination [Member] \| Americas [Member]
Segment Reporting Information [Line Items]
Net sales	9,100	7,300	8,300
Intersegment Elimination [Member] \| EMEA [Member]
Segment Reporting Information [Line Items]
Net sales	22,000	20,300	21,900
Intersegment Elimination [Member] \| Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net sales	600	200	500
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,417,677	1,133,503	867,520
Operating Segments [Member] \| Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	269,030	207,973	160,433
Operating Segments [Member] \| Americas [Member]
Segment Reporting Information [Line Items]
Net sales	604,957	541,549	419,766
Operating Segments [Member] \| Americas [Member] \| Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	154,796	149,428	122,165
Operating Segments [Member] \| EMEA [Member]
Segment Reporting Information [Line Items]
Net sales	451,351	315,685	233,597
Operating Segments [Member] \| EMEA [Member] \| Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	68,164	30,115	16,613
Operating Segments [Member] \| Asia Pacific [Member]
Segment Reporting Information [Line Items]
Net sales	361,369	276,269	214,157
Operating Segments [Member] \| Asia Pacific [Member] \| Global Specialty Businesses [Member]
Segment Reporting Information [Line Items]
Net sales	$ 46,070	$ 28,430	$ 21,655

Segments - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation From Segment Totals To Consolidated Abstract
Operating Earnings, Excluding Indirect Operating Expenses	$ 333,588	$ 251,704	$ 195,475
Combination-related expenses	(29,790)	(35,477)	(16,661)
Restructuring and related charges	(5,541)	(26,678)	0
Fair value step up of inventory sold	(226)	(11,714)	0
Indefinite-lived intangible asset impairment	(38,000)	0	0
Non-operating Charges	(143,202)	(104,572)	(83,515)
Depreciation of corporate assets and amortization	(57,469)	(27,129)	(7,518)
Operating income	59,360	46,134	87,781
Other expense, net	(5,618)	(254)	(642)
Interest expense, net	(26,603)	(16,976)	(4,041)
Income before taxes and equity in net income of associated companies	$ 27,139	$ 28,904	$ 83,098

Net Sales and Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues [Abstract]
Net Reporting Amount	$ 42.5	$ 48.0	$ 47.1
Deferred Revenue	$ 4.0	$ 2.2
Top Five Customers Concentration Risk [Member] \| Sales Revenue Net [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	10.00%
Top Customer Concentration Risk [Member] \| Sales Revenue Net [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	3.00%

Net Sales and Revenue Recognition - Product Lines (Details) - Sales Revenue Net [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Metal removal fluids Line [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	23.90%	19.90%	15.40%
Rolling Lubricants Product Line [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	21.80%	21.90%	25.50%
Hydraulic Fluids Product Line [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	13.30%	13.00%	13.00%

Net Sales and Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Product Information [Line Items]
Net sales	$ 1,417,677	$ 1,133,503	$ 867,520
Global Specialty Businesses [Member]
Product Information [Line Items]
Net sales	269,030	207,973	160,433
Americas [Member]
Product Information [Line Items]
Net sales	450,161	392,121	297,601
EMEA [Member]
Product Information [Line Items]
Net sales	383,187	285,570	216,984
EMEA [Member] \| Product [Member]
Product Information [Line Items]
Net sales	383,187	285,570	216,984
Asia Pacific [Member]
Product Information [Line Items]
Net sales	315,299	247,839	192,502
Asia Pacific [Member] \| Product [Member]
Product Information [Line Items]
Net sales	315,299	247,839	192,502
Operating Segments [Member]
Product Information [Line Items]
Net sales	1,417,677	1,133,503	867,520
Operating Segments [Member] \| Transferred At Point In Time [Member]
Product Information [Line Items]
Net sales	1,368,129	1,105,304	847,886
Operating Segments [Member] \| Transferred Over Time [Member]
Product Information [Line Items]
Net sales	49,548	28,199	19,634
Operating Segments [Member] \| Product [Member]
Product Information [Line Items]
Net sales	1,148,647	925,530	707,087
Operating Segments [Member] \| Metals [Member]
Product Information [Line Items]
Net sales	439,111	414,259	385,918
Operating Segments [Member] \| Metalworking [Member]
Product Information [Line Items]
Net sales	709,536	511,271	321,169
Operating Segments [Member] \| Global Specialty Businesses [Member]
Product Information [Line Items]
Net sales	269,030	207,973	160,433
Operating Segments [Member] \| Americas [Member]
Product Information [Line Items]
Net sales	604,957	541,549	419,766
Operating Segments [Member] \| Americas [Member] \| Transferred At Point In Time [Member]
Product Information [Line Items]
Net sales	580,663	525,802	408,402
Operating Segments [Member] \| Americas [Member] \| Transferred Over Time [Member]
Product Information [Line Items]
Net sales	24,294	15,747	11,364
Operating Segments [Member] \| Americas [Member] \| Product [Member]
Product Information [Line Items]
Net sales	450,161	392,121	297,601
Operating Segments [Member] \| Americas [Member] \| Metals [Member]
Product Information [Line Items]
Net sales	163,135	171,784	164,263
Operating Segments [Member] \| Americas [Member] \| Metalworking [Member]
Product Information [Line Items]
Net sales	287,026	220,337	133,338
Operating Segments [Member] \| Americas [Member] \| Global Specialty Businesses [Member]
Product Information [Line Items]
Net sales	154,796	149,428	122,165
Operating Segments [Member] \| EMEA [Member]
Product Information [Line Items]
Net sales	451,351	315,685	233,597
Operating Segments [Member] \| EMEA [Member] \| Transferred At Point In Time [Member]
Product Information [Line Items]
Net sales	434,549	310,274	233,372
Operating Segments [Member] \| EMEA [Member] \| Transferred Over Time [Member]
Product Information [Line Items]
Net sales	16,802	5,411	225
Operating Segments [Member] \| EMEA [Member] \| Product [Member]
Product Information [Line Items]
Net sales	383,187	285,570	216,984
Operating Segments [Member] \| EMEA [Member] \| Metals [Member]
Product Information [Line Items]
Net sales	107,880	100,605	101,028
Operating Segments [Member] \| EMEA [Member] \| Metalworking [Member]
Product Information [Line Items]
Net sales	275,307	184,965	115,956
Operating Segments [Member] \| EMEA [Member] \| Global Specialty Businesses [Member]
Product Information [Line Items]
Net sales	68,164	30,115	16,613
Operating Segments [Member] \| Asia Pacific [Member]
Product Information [Line Items]
Net sales	361,369	276,269	214,157
Operating Segments [Member] \| Asia Pacific [Member] \| Transferred At Point In Time [Member]
Product Information [Line Items]
Net sales	352,917	269,228	206,112
Operating Segments [Member] \| Asia Pacific [Member] \| Transferred Over Time [Member]
Product Information [Line Items]
Net sales	8,452	7,041	8,045
Operating Segments [Member] \| Asia Pacific [Member] \| Product [Member]
Product Information [Line Items]
Net sales	315,299	247,839	192,502
Operating Segments [Member] \| Asia Pacific [Member] \| Metals [Member]
Product Information [Line Items]
Net sales	168,096	141,870	120,627
Operating Segments [Member] \| Asia Pacific [Member] \| Metalworking [Member]
Product Information [Line Items]
Net sales	147,203	105,969	71,875
Operating Segments [Member] \| Asia Pacific [Member] \| Global Specialty Businesses [Member]
Product Information [Line Items]
Net sales	$ 46,070	$ 28,430	$ 21,655

Leases - Narrative (Details) - USD ($)	12 Months Ended
Leases - Narrative (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease Cost	$ 14,200,000	$ 9,400,000
Short Term Lease Cost	1,300,000	1,500,000
Variable Lease Cost	0	0
Sublease Income	0	0
Operating Lease Payments	14,100,000	$ 9,200,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 6,900,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Total assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Total liabilities
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee Operating Lease Term Of Contract	11 years
Land [Member] \| Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee Operating Lease Term Of Contract	95 years

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Abstract]
Right of use lease assets	$ 38,507	$ 42,905
Short-term lease liabilities	10,901	11,177
Long-term lease liabilities	27,070	31,273
Total operating lease liabilities	$ 37,971	$ 42,450
Operating Lease Weighted Average Remaining Lease Term	6 years	6 years 2 months 12 days
Operating Lease Weighted Average Discount Rate Percent	420.00%	421.00%

Leases - Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Lease Liabilities Payments Due [Abstract]
For the year ended December 31, 2021	$ 12,342
For the year ended December 31, 2022	8,395
For the year ended December 31, 2023	6,220
For the year ended December 31, 2024	4,610
For the year ended December 31, 2025	3,836
For the year ended December 31, 2026 and beyond	8,141
Total lease payments	43,544
Less: imputed interest	(5,573)
Present value of lease liabilities	$ 37,971	$ 42,450

Restructuring Activities - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) People	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Abstract]
Restructuring and related charges	$ 5,541	$ 26,678	$ 0
Restructuring And Related Cost Expected Number Of Positions Eliminated \| People	350
Real Estate Held for sale	$ 10,000
Gain Loss On Sale Of Other Assets	$ 600

Restructuring Activities (Details) - USD ($) $ in Thousands	12 Months Ended
Restructuring Activities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring and related charges	$ 5,541	$ 26,678	$ 0
QH Program [Member]
Restructuring Reserve [Roll Forward]
Accrued Restructuring, Beginning Balance	18,043	0
Restructuring and related charges	5,541	26,678
Cash Payments	(15,745)	(8,899)
Currency Translation Adjustments	409	264
Accrued Restructuring, Ending Balance	$ 8,248	$ 18,043	$ 0

Share-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation [Abstract]
Exercised Options, Intrinsic Value	$ 6,500	$ 2,500	$ 2,000
Equity Award Vesting Period	3 years
Share Based Compensation [Line Items]
ESPP: Purchase Price Percentage	85.00%
ESPP: Discount from Market Price	15.00%
Director Stock Ownership Plan Maximum Number of Shares Authorized Under Plan	75,000
Director Retainer Annual Fee	$ 100
Director Stock ownership Percentage Threshold	400.00%
Director Stock Ownership Plan Percentage Cash	25.00%
Share-based Compensation Expense	$ 10,996	$ 4,861	$ 3,724
Director Stock Ownership Plan Percentage Stock	75.00%
Director Stock Ownership Plan Percentage Total	100.00%
Risk-free Interest Rate	0.36%	1.52%	2.54%	1.67%
Expected Term (Years)	4 years	4 years	4 years	4 years
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross	49,115	51,610	35,842	42,477
Employee Stock Option [Member]
Share Based Compensation [Line Items]
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1	1 year 10 months 24 days
Restricted Stock LTIP [Member]
Share Based Compensation [Line Items]
Nonvested Stock Awards Granted	28,244
Unrecognized Share-based Compensation Expense, Nonvested Stock Award	$ 4,700
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1	1 year 7 months 6 days
Annual Incentive Plan [Member]
Share Based Compensation [Line Items]
Share-based Compensation Expense	$ 0	$ 0	$ 0
Restricted Stock Units (RSUs) LTIP Plan [Member]
Share Based Compensation [Line Items]
Nonvested Stock Awards Granted	6,030
Unrecognized Share-based Compensation Expense, Nonvested Stock Award	$ 800
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1	2 years
Combination And Other Acquisition-Related [Member]
Share Based Compensation [Line Items]
Share-based Compensation Expense	$ 1,500	900	100
Performance Incentive Stock Units [Member]
Share Based Compensation [Line Items]
Share-based Compensation Expense	840	$ 0	$ 0
Unrecognized Compensation Expense, Options	$ 2,500
Vesting Shares Target Lower Percent	0.00%
Vesting Shares Target Upper Percent	200.00%
Risk-free Interest Rate	0.28%
Expected Term (Years)	3 years
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1	2 years 2 months 12 days
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross	20,000
Defined Contribution Plan [Member]
Share Based Compensation [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent	6.00%
Defined contribution plan employer matching contribution percent maximum	3.00%
Defined Contribution Plan Employer Matching Contribution Percent Of Match	50.00%
Defined Contribution Plan Employer Discretionary Contribution Amount	$ 3,100

Share-Based Compensation - Expense Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 10,996	$ 4,861	$ 3,724
Stock Options Compensation Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	1,491	1,448	1,053
Nonvested Stock Awards Compensation Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	5,012	3,206	2,459
Matching Stock Contribution 401 K Plan Compensation Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	3,112	0	0
Employee Stock Purchase Plan Compensation Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	0	84	89
Directors Stock Ownership Plan Compensation Expense [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	541	123	123
Performance Incentive Stock Units [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	840	0	0
Annual Incentive Plan [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 0	$ 0	$ 0

Share-Based Compensation - Option Rollforward (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll [Forward]
Beginning Balance	144,412
Options Granted	49,115	51,610	35,842	42,477
Options Exercised	(83,191)
Ending Balance	110,336	144,412
Options Expected to Vest	92,890
Options Exerciseable	17,446
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of year	$ 137.15
Options Granted	136.64
Options Exercised	128.42
Outstanding at End of Period	143.51	$ 137.15
Options Expected to Vest	144.86
Options Exerciseable	$ 136.32
Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Term, Outstanding	5 years 2 months 12 days
Weighted Average Remaining Contractual Term, Expected to Vest	5 years 7 months 6 days
Weighted Average Remaining Contractual Term, Exercisable	3 years 4 months 24 days
Outstanding Options, Intrinsic Value	$ 12,015
Expected to Vest Options, Intrinsic Value	9,990
Exercisable Options, Intrinsic Value	$ 2,025

Share-Based Compensation - Option Summary (Details)	12 Months Ended
Share-Based Compensation - Option Summary (Details)	Dec. 31, 2020 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of Outstanding Options, Exercise Price Range \| shares	110,336
Weighted Average Contractual Life, Outstanding Options, Exercise Price Range	5 years 2 months 12 days
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 143.51
Number of Exercisable Options, Exercise Price Range \| shares	17,446
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 136.32
$70.01 - $80.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	70.01
Exercise Price Range, Upper Range Limit	$ 80.00
Number of Outstanding Options, Exercise Price Range \| shares	2,133
Weighted Average Contractual Life, Outstanding Options, Exercise Price Range	1 year
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 72.12
Number of Exercisable Options, Exercise Price Range \| shares	2,133
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 72.12
$80.01 - $90.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	80.01
Exercise Price Range, Upper Range Limit	$ 90.00
Number of Outstanding Options, Exercise Price Range \| shares	1,309
Weighted Average Contractual Life, Outstanding Options, Exercise Price Range	1 year
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 87.30
Number of Exercisable Options, Exercise Price Range \| shares	1,309
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 87.30
$90.01 - $130.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	90.01
Exercise Price Range, Upper Range Limit	$ 130.00
Number of Outstanding Options, Exercise Price Range \| shares	0
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 0
Number of Exercisable Options, Exercise Price Range \| shares	0
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 0
$130.01 - $140.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	130.01
Exercise Price Range, Upper Range Limit	$ 140.00
Number of Outstanding Options, Exercise Price Range \| shares	51,732
Weighted Average Contractual Life, Outstanding Options, Exercise Price Range	6 years
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 136.54
Number of Exercisable Options, Exercise Price Range \| shares	2,617
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 134.60
$140.01 - $150.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	140.01
Exercise Price Range, Upper Range Limit	$ 150.00
Number of Outstanding Options, Exercise Price Range \| shares	0
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 0
Number of Exercisable Options, Exercise Price Range \| shares	0
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 0
$150.01 - $160.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	150.01
Exercise Price Range, Upper Range Limit	$ 160.00
Number of Outstanding Options, Exercise Price Range \| shares	55,162
Weighted Average Contractual Life, Outstanding Options, Exercise Price Range	4 years 9 months 18 days
Weighted Average Exercise Price, Outstanding Options, Exercise Price Range	$ 154.14
Number of Exercisable Options, Exercise Price Range \| shares	11,387
Weighted Average Exercise Price, Exercisable Options, Exercise Price Range	$ 154.37

Share-Based Compensation - Options Grants (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-Based Compensation Arrangement By Share-Based Payment Award Fair Value Assumptions And Methodology [Abstract]
Options Granted	49,115	51,610	35,842	42,477
Dividend Yield	0.99%	1.12%	1.37%	1.49%
Expected Volatility	31.57%	26.29%	24.73%	25.52%
Risk-free Interest Rate	0.36%	1.52%	2.54%	1.67%
Expected Term (Years)	4 years	4 years	4 years	4 years

Share-Based Compensation - Option Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 10,996	$ 4,861	$ 3,724
2020 Stock option awards [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	385	0	0
Unrecognized Compensation Expense, Options	1,200
2019 Stock option awards [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	698	665	0
Unrecognized Compensation Expense, Options	300
2018 Stock option awards [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	357	364	310
Unrecognized Compensation Expense, Options	100
2017 Stock option awards [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Share-based Compensation Expense	$ 51	$ 369	$ 367

Share-Based Compensation - Restricted Stock Rollforward (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Restricted Stock LTIP [Member]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested [Roll Forward]
Beginning Balance \| shares	64,500
Nonvested Stock Awards Granted \| shares	28,244
Nonvested Stock Awards Vested \| shares	(19,195)
Nonvested Stock Awards Forfeited \| shares	(1,781)
Ending Balance \| shares	71,768
Weighted Average Grant Date Fair Value, Nonvested Stock Awards, Beginning of Period \| $ / shares	$ 152.67
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Granted \| $ / shares	145.63
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Vested \| $ / shares	148.15
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Forfeited \| $ / shares	150.27
Weighted Average Grant Date Fair Value, Nonvested Stock Awards, End of Period \| $ / shares	$ 151.17
Restricted Stock Units (RSUs) LTIP Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested [Roll Forward]
Beginning Balance \| shares	8,655
Nonvested Stock Awards Granted \| shares	6,030
Nonvested Stock Awards Vested \| shares	(1,791)
Nonvested Stock Awards Forfeited \| shares	(2,049)
Ending Balance \| shares	10,845
Weighted Average Grant Date Fair Value, Nonvested Stock Awards, Beginning of Period \| $ / shares	$ 152.09
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Granted \| $ / shares	141.65
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Vested \| $ / shares	141.92
Weighted Average Grant Date Fair Value, Nonvested Stock Awards Forfeited \| $ / shares	153.50
Weighted Average Grant Date Fair Value, Nonvested Stock Awards, End of Period \| $ / shares	$ 147.70

Other Income (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
Other Income (Expense) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Abstract]
Income from third party license fees	$ 999	$ 1,035	$ 862
Foreign exchange gains (losses), net	(6,082)	223	(807)
Gain (loss) on fixed asset disposals, net	(871)	58	657
Non-income tax refunds and other related credits	3,345	1,118	668
Pension and post retirement benefit costs, non-service components	(21,592)	(2,805)	(2,285)
Insurance solvency recovery	18,144	60	90
Other Operating Income Expense Net	439	57	173
Other expense, net	(5,618)	(254)	(642)
Narrative [Abstract]
Foreign Currency Transaction Loss Before Tax	400	$ 1,000	400
Foreign Currency Transaction Gain, before Tax			400
Gain (loss) on disposition of assets	(600)		$ 600
Defined Benefit Plan Premium Refund	1,600
Pension Settlement Charge	$ 22,700

Income Taxes - Components of Expense and Earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current Income Tax Expense (Benefit) [Abstract]
Federal	$ (1,359)	$ (239)	$ 6,583
State	1,171	352	(1,844)
Foreign	33,173	26,213	12,114
Current Income Tax Expense (Benefit), Total	32,985	26,326	16,853
Deferred Income Tax Expense (Benefit) [Abstract]
Federal	(28,437)	(9,267)	7,859
State	(3,087)	(396)	(173)
Foreign	(6,757)	(14,579)	511
Income Tax Expense (Benefit), Total	(5,296)	2,084	25,050
Components Of Earnings Before Taxes [Abstract]
U.S.	(66,585)	(46,697)	27,387
Foreign	93,724	75,601	55,711
Income before taxes and equity in net income of associated companies	$ 27,139	$ 28,904	$ 83,098

Income Taxes - Deferred Tax Balances (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement benefits	$ 15,237,000	$ 15,142,000
Allowance for doubtful accounts	2,316,000	2,253,000
Insurance and litigation reserves	842,000	1,002,000
Performance incentives	5,914,000	7,213,000
Equity-based compensation	1,282,000	1,050,000
Prepaid expense	756,000	2,976,000
Insurance settlement	0	3,895,000
Operating loss carryforward	16,693,000	16,044,000
Foreign tax credit and other credits	24,873,000	34,384,000
Interest	16,812,000	11,479,000
Restructuring reserves	1,121,000	2,167,000
Right of use lease assets	9,346,000	10,015,000
Royalties and license fees	0	2,156,000
Inventory reserves	2,225,000	2,163,000
Research and development	7,974,000	2,580,000
Other	3,005,000	1,317,000
Total deferred tax assets, gross	108,396,000	115,836,000
Valuation allowance	(21,511,000)	(13,834,000)	$ (7,520,000)	$ (7,401,000)
Total deferred tax assets, net	86,885,000	102,002,000
Depreciation	15,473,000	17,754,000
Foreign pension and other	1,807,000	1,269,000
Amortization and other	222,794,000	254,359,000
Lease liabilities	9,151,000	9,965,000
Outside basis in equity investment	7,938,000	6,776,000
Unremitted earnings	5,919,000	8,228,000
Total deferred tax liabilities	$ 263,082,000	$ 298,351,000

Income Taxes - Valuation Allowance Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation allowance [Abstract]
Valuation Allowances, Beginning Balance	$ 13,834	$ 7,520	$ 7,401
Purchase Accounting Adjustment	7,148	13,752	0
Additional Valuation Allowance	2,738	832	650
Allowance Utilization and Other	(2,153)	(8,227)	(471)
Exchange Rate Changes and Other Adjustments	(56)	(43)	(60)
Valuation Allowance, Ending Balance	$ 21,511	$ 13,834	$ 7,520

Income Taxes - Net Deferred Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Taxes on Income and Uncertain Tax Positions [Abstract]
Deferred tax assets	$ 16,566	$ 14,745
Deferred tax liabilities	176,197	196,349
Deferred tax liabilities,net	$ 192,763	$ 211,094

Income Taxes - Rate Reconciliation (Details) - USD ($)	12 Months Ended
Income Taxes - Rate Reconciliation (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Income tax provision at the federal statutory tax rate	$ 5,699,000	$ 6,070,000	$ 17,458,000
Unremitted Earnings	2,308,000	4,383,000	7,857,000
Transition Tax	(1,059,000)	(416,000)	(3,118,000)
Global intangible low taxed income	5,140,000	574,000	2,095,000
Pension Settlement	(2,247,000)	0	0
Foreign derived intangible income	(7,339,000)	(1,699,000)	(1,034,000)
Non-deductible acquisition expenses	131,000	1,743,000	1,019,000
Withholding taxes	7,809,000	8,621,000	1,161,000
Share-based compensation	335,000	(540,000)	259,000
Differences in tax rates on foreign earnings and remittances	596,000	920,000	1,081,000
Excess Foreign Tax Credit Utilization	(4,699,000)	(3,787,000)	(1,911,000)
Research and development activities credit utilization	(475,000)	(306,000)	(230,000)
Uncertain tax positions	1,990,000	899,000	(79,000)
State income tax provisions, net	(2,245,000)	(117,000)	196,000
Non-deductible meals and entertainment	290,000	318,000	415,000
Intercompany transfer of intellectual property	(4,384,000)	(5,318,000)	0
Miscellaneous items, net	(2,530,000)	(495,000)	(119,000)
Income Tax Expense (Benefit), Total	$ (5,296,000)	$ 2,084,000	$ 25,050,000

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets, Net	$ 86,885	$ 102,002
Defered Tax Liabilties, Net	263,082	298,351
Operating Loss Carryforwards, Valuation Allowance	10,200	8,200
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Liability	15,500
Tax Cuts And Jobs Act Of 2017 Transition Tax For Accumulated Foreign Earnings Liability Installments Paid	7,000
Tax Cuts And Jobs Act Of 2017 Transition Tax For Accumulated Foreign Earnings Liability Remaining Installments	8,500
Tax Cuts And Jobs Act Of 2017 Accounting Earnings Of Foreign Subsidiary	322,600
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	11,300
Deferred Tax Assets, Partial Valuation Allowance, Net Expected Future Benefit	3,300
Operating Loss Carryforwards, State, Partial Valuation Allowance	8,000
Operating Loss Carryforwards, Foreign, Partial Valuation Allowance	1,700
Deferred Tax Assets Operating Loss Carryforwards State And Local Based On Reversal Of Deferred Tax Liabilities	$ 3,300
Deferred Tax Assets Operating Loss Carryforwards Foreign Expiration Period	10 years
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 5,400
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	24,873	34,384
Deferred Tax Assets Tax Credit Carryforwards Foreign Expected To Expire	24,900	33,700
Deferred Tax Assets, Acquired Disallowed Interest	15,700
Unrecognized Tax Benefits	22,152	19,097	$ 7,050	$ 6,761
Unrecognized Tax Benefits, Income Tax Penalties Accrued	3,900	3,100
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	3,000	2,300
Unrecognized Tax Benefits, Interest on Income Taxes Expense	600	200	100
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	3,659	1,029	1,292
Unrecognized Tax Benefits If Recognized	14,700	13,300	2,200
Indemnification assets	7,615	4,006
Valuation Allowance Amount State Deferred tax asset	1,000
Valuation allowance amount Other Foreign Deferred Tax Asset	600
Income Tax Reconciliation Change In Enacted Tax Rate	(1,059)	$ (416)	$ (3,118)
Combination And Norman Hay [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	41,800
Deferred Tax Assets, Acquired Disallowed Interest	14,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	222,800
Korea Houghton Coporation [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	$ 7,900
Business Acquisition, Percentage of Voting Interests Acquired		50.00%
Expiration In Year Five [Member]
Deferred Tax Assets Operating Loss Carryforwards State And Local Expiration Period	5 years
Expiration In Twenty Years [Member]
Deferred Tax Assets Operating Loss Carryforwards State And Local Expiration Period	20 years
Foreign Tax Authority [Member]
Defered Tax Liabilties, Net	$ 5,900

Income Taxes - Uncertain Tax Positions - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Uncertain Tax Positions [Abstract]
Unrecognized Tax Benefits	$ 22,152	$ 19,097	$ 7,050	$ 6,761
Accrued Interest	3,000	2,300
Accrued Penalties	3,900	3,100
Unrecognized Tax Benefits, Interest on Income Taxes Expense	600	200	100
Unrecognized Tax Benefits Tax Penalties Income	100	200	200
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	3,659	1,029	$ 1,292
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	3,900
Income Tax Examination [Line Items]
Indemnification assets	$ 7,615	$ 4,006
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2017
Foreign Tax Authority [Member] \| The Netherlands [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2015
Foreign Tax Authority [Member] \| United Kingdom [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016
Foreign Tax Authority [Member] \| Brazil [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2011
Foreign Tax Authority [Member] \| Spain [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016
Foreign Tax Authority [Member] \| China [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2015
Foreign Tax Authority [Member] \| Italy [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2006
Unrecognized Tax Benefits Reserve	$ 900
Foreign Tax Authority [Member] \| Italy [Member] \| Houghton [Member]
Income Tax Examination [Line Items]
Unrecognized Tax Benefits Reserve	5,800
Indemnification assets	$ 5,800
Foreign Tax Authority [Member] \| Mexico [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2015
Foreign Tax Authority [Member] \| India [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2018
Foreign Tax Authority [Member] \| Canada [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2017
Foreign Tax Authority [Member] \| Germany [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016
Foreign Tax Authority [Member] \| Germany [Member] \| Houghton [Member]
Income Tax Examination [Line Items]
Unrecognized Tax Benefits Reserve	$ 900
Indemnification assets	$ 800
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2011

Income Taxes - Uncertain Tax Positions - Tabular Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	$ 19,097	$ 7,050	$ 6,761
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	2,025
Decrease in unrecognized tax benefits taken in prior periods		(28)	(183)
Increase in Unrecognized Tax Benefits Taken in Current Period	3,095	1,935	2,023
Decrease in Unrecognized Tax Benefits Due to Lapse of Statute of Limitations	(3,659)	(1,029)	(1,292)
Increase in unrecognized tax benefits due to acquisition	597	11,301	0
(Decrease) Due to Foreign Exchange Rates		(132)	(259)
Increase Due to Foreign Exchange Rates	997
Unrecognized Tax Benefits, Ending Balance	$ 22,152	$ 19,097	$ 7,050

Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to Quaker Chemical Corporation	$ 39,658	$ 31,622	$ 59,473
Less: Income Allocated to Participating Securities	(148)	(90)	(253)
Net income available to common shareholders	$ 39,510	$ 31,532	$ 59,220
Basic weighted average common shares outstanding	17,719,792	15,126,928	13,268,047
Basic earnings per common share	$ 2.23	$ 2.08	$ 4.46

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1448-109256

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(23))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e3842-109258

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(25))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1252-109256

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(27))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794

+ Details

- Definition

Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1448-109256

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1377-109256

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599

+ Details

Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to Quaker Chemical Corporation	$ 39,658	$ 31,622	$ 59,473
Less: income allocated to participating securities	(148)	(90)	(252)
Net income available to common shareholders	$ 39,510	$ 31,532	$ 59,221
Basic weighted average common shares outstanding	17,719,792	15,126,928	13,268,047
Effect of Dilutive Securities	31,087	36,243	36,685
Diluted weighted average common shares outstanding	17,750,879	15,163,171	13,304,732
Diluted earnings per common share	$ 2.22	$ 2.08	$ 4.45

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 52
-URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e3842-109258

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1252-109256

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(27))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(23))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(25))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Earnings Per Share - Antidilutive Shares (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Antidilutive Shares	945	108	1,808
Combination [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		4,300,000
Business Acquisition, Equity Interest Issued or Issuable, Percentage Of Company in Shares Issued		24.50%

Restricted Cash (Details) - USD ($) $ in Thousands	12 Months Ended
Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	$ 181,833	$ 123,524	$ 104,147	$ 89,879
Restricted cash included in other current assets	62	353	0	0
Restricted cash included in other assets	0	19,678	20,278	21,171
Cash cash equivalents restricted cash and restricted cash equivalents	$ 181,895	143,555	$ 124,425	$ 111,050
Loss Contingency, Settlement Agreement, Terms	Prior to December 2020, the Company had restricted cash recorded in other assets related to proceeds from an inactive subsidiary of the Company which previously executed separate settlement and release agreements with two of its insurance carriers for an original total value of $35.0 million.
Proceeds Of Settlement And Release Agreements	$ 18,100
Payments Of Settlement and Release Agreements	1,000	800
Interest Income Other	$ 100	$ 200

Accounts Receivable - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable and Allowance for Doubtful Accounts [Abstract]
Accounts Receivable Gross Current	$ 386,100	$ 387,700
Business Combination, Acquired Receivables, Estimated Uncollectible		5,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for Doubtful Accounts	$ 3,582	$ 1,925	$ 493
Reclassification Of Allowance For Doubtful Accounts, Other Assets			$ 300

Allowance For Doubtful Accounts - Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Valuation and Qualifying Accounts Disclosure [Roll forward]
Balance at Beginning of Period	$ 11,716	$ 5,187	$ 5,457
Charged to Costs and Expenses	3,582	1,925	493
Write-Offs Charged to Allowance	(2,187)	(322)	(295)
Exchange Rate Changes and Other Adjustments	34	4,926	(468)
Balance at End of Period	$ 13,145	$ 11,716	$ 5,187

Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Inventories [Abstract]
Raw Materials And Supplies	$ 86,148	$ 82,058
Work-In-Process and Finished Goods	101,616	92,892
Inventories	$ 187,764	$ 174,950

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment Gross Abstract
Land	$ 33,009	$ 34,686
Building and Improvements	135,595	130,462
Machinery and Equipment	246,242	225,636
Construction In Progress	8,407	8,050
Property, Plant and Equipment, Gross, Total	423,253	398,834
Less: Accumulated Depreciation	(219,370)	(185,365)
Property, Plant and Equipment, Net, Total	$ 203,883	$ 213,469

Property, Plant and Equipment - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Property, Plant and Equipment [Abstract]
Capital Leased Assets Gross	$ 0.4
Long Lived Assets Held For Sale Description	In connection with the plans for closure of certain facilities, certain buildings and land with an aggregate book value of approximately $10.0 million continue to be held-for-sale as of December 31, 2020 and are recorded in other current assets on the Company’s Consolidated Balance Sheet.
Real Estate Held for sale	$ 10.0

Goodwill Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Goodwill Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Goodwill Roll Forward
Goodwill, Beginning Balance	$ 607,205	$ 83,333
Goodwill Additions	3,345	524,297
Goodwill, Translation Adjustments	20,662	(425)
Goodwill, Ending Balance	631,212	607,205
Global Specialty Businesses [Member]
Goodwill Roll Forward
Goodwill Period Increase Decrease	500
Americas [Member]
Goodwill Roll Forward
Goodwill Period Increase Decrease	2,600
EMEA [Member]
Goodwill Roll Forward
Goodwill Period Increase Decrease	1,400
Asia Pacific [Member]
Goodwill Roll Forward
Goodwill Period Increase Decrease	8,000
Operating Segments [Member] \| Global Specialty Businesses [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	116,075	24,297
Goodwill Additions	1,329	91,545
Goodwill, Translation Adjustments	2,314	233
Goodwill, Ending Balance	119,718	116,075
Operating Segments [Member] \| Americas [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	216,385	28,464
Goodwill Additions	1,485	188,494
Goodwill, Translation Adjustments	(4,628)	(573)
Goodwill, Ending Balance	213,242	216,385
Operating Segments [Member] \| EMEA [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	133,018	17,423
Goodwill Additions	531	114,167
Goodwill, Translation Adjustments	6,613	1,428
Goodwill, Ending Balance	140,162	133,018
Operating Segments [Member] \| Asia Pacific [Member]
Goodwill Roll Forward
Goodwill, Beginning Balance	141,727	13,149
Goodwill Additions	0	130,091
Goodwill, Translation Adjustments	16,363	(1,513)
Goodwill, Ending Balance	$ 158,090	$ 141,727

Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	$ 136,113	$ 77,007
Total	1,012,371	955,672
Customer lists and rights to sell [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	99,806	49,932
Total	839,551	792,362
Trademarks Formulations And Product Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	30,483	21,299
Total	166,448	157,049
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Accumulated Amortization	5,824	5,776
Total	$ 6,372	$ 6,261

Intangible Assets - Amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization	$ 55.9	$ 26.7	$ 7.3

Intangible Assets - Future Amortization (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
For the Year ended December 31, 2021	$ 58,752
For the Year ended December 31, 2022	58,590
For the Year ended December 31, 2023	58,361
For the Year ended December 31, 2024	57,935
For the Year ended December 31, 2025	$ 57,263

Intangible Assets - Indefinite Lived (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Indefinite Lived Intangible Assets Excluding Goodwill [Abstract]
Indefinite Lived Trademarks	$ 204,000	$ 243,100
Indefinite lived intangible assets	205,100
Indefinite-lived intangible asset impairment	$ 38,000	$ 0	$ 0

Investment in Associated Companies - Narrative (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Equity Method Investments	$ 95,785,000	$ 93,822,000
Nippon Quaker (Japan) [Member] \| Asia Pacific [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 7,800,000
Kelko (Venezuela) [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage		50.00%
Equity Method Investments		$ 0
Kelko (Venezuela) [Member] \| Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 0
Kelko (Panama) [Member] \| Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 300,000
Primex (Barbados) [Member] \| Americas [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	32.00%
Equity Method Investments	$ 19,400,000
Houghton Korea [Member] \| Asia Pacific [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage	50.00%
Equity Method Investments	$ 68,300,000

Investments in Associated Companies - Summarized Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity in net income of associated companies	$ 7,352	$ 5,064	$ 1,763
Korea Houghton Coporation [Member]
Equity in net income of associated companies	5,241	2,337	0
Equity Method Investee Name Nippon Quaker Japan [Member]
Equity in net income of associated companies	853	850	713
Equity Method Investee Name Kelko Panama [Member]
Equity in net income of associated companies	107	55	222
Equity Method Investee Name Kelko Venezuela [Member]
Equity in net income of associated companies	0	0	(138)
Equity Method Investee Name Primex [Member]
Equity in net income of associated companies	$ 1,151	$ 1,822	$ 966

Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Assets [Abstract]
Uncertain Tax Positions	$ 7,209	$ 4,993
Pension assets	6,748	0
Debt issuance costs	5,919	7,571
Indemnification assets	7,615	4,006
Supplemental Retirement Income Program	1,961	1,782
Restricted insurance settlement	0	19,678
Other	2,344	2,403
Total other assets	$ 31,796	$ 40,433

- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References + Details

Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Accrued Liabilities [Abstract]
Non-income taxes	$ 26,080	$ 21,176
Current Income Taxes Payable	13,124	7,503
Professional Fees, legal, and acquisition-related accruals	11,437	17,103
Short-term lease liabilities	10,901	11,177
Selling Expenses and freight accruals	10,475,000	11,350
Customer advances and sales return reserves	6,380	5,554
Other	13,710	9,742
Total other accrued liabilities	$ 92,107	$ 83,605

Debt - Table (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Less: debt issuance costs	$ (11,099)	$ (14,196)
Less: short-term and current portion of long-term debts	(38,967)	(38,332)
Total long-term debt	$ 849,068	$ 882,437
Revolver [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	165.00%	320.00%
U.S. Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	165.00%	3.20%
EURO Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	150.00%	1.50%
Industrial development bonds [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage	526.00%	526.00%
Total debt	$ 10,000	$ 10,000

Debt - Maturity Schedules (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Long Term Debt By Maturity Abstract
2021	$ 38,795
2022	57,850
2023	76,943
2024	715,227
2025	$ 231

Debt - Debt related expenses included within Interest expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt related expenses included within Interest expense:
Interest Expense, Debt	$ 23,552	$ 16,788	$ 6,158
Amortization of debt issuance costs	4,749	1,979	70
Total	$ 28,301	$ 18,767	$ 6,228

Debt - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
Debt - Narrative (Details) - USD ($) $ in Thousands	Aug. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Credit facilities		$ 899,134	$ 934,965
Financing-related debt issuance costs		0	23,747	$ 0
Letters Of Credit Outstanding Amount		10,000
Debt Instrument, Unused Borrowing Capacity, Amount		40,000
Debt Issuance Cost Capitalized to Term loans and Long Term Debt		11,099	14,196
Deferred Finance Costs Noncurrent Gross		$ 23,700
Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.30%
Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.20%
New Credit facility [Member]
Debt Instrument [Line Items]
Credit facilities		$ 160,000	171,169
Financing-related debt issuance costs	$ 6,300
Percentage of term loan principal amortization year one		5.00%
Percentage of term loan principal amortization year two		5.00%
Percentage of term loan principal amortization year three		7.50%
Percentage of term loan principal amortization year four and five		10.00%
Debt Instrument, Interest Rate During Period		2.20%
Payments of long-term debt		$ 37,600
Debt, Weighted Average Interest Rate		1.60%
Line of Credit Facility, Remaining Borrowing Capacity		$ 300,000
Debt Instrument, Maturity Date		Aug. 01, 2024
Line of Credit Facility, Covenant Compliance		As of December 31, 2020 and December 31, 2019, the Company was in compliance with all of the Credit Facility covenants.
Line of Credit Facility, Covenant Terms		The Company’s initial consolidated net debt to consolidated adjusted EBITDA ratio could not exceed 4.25 to 1, with step downs in the permitted ratio over the term of the Credit Facility. As of December 31, 2020, the consolidated net debt to adjusted EBITDA may not exceed 4.00 to 1. The Company’s consolidated adjusted EBITDA to interest expense ratio cannot be less than 3.0 to 1 over the term of the agreement. The Credit Facility also prohibits the payment of cash dividends if the Company is in default or if the amount of the dividend paid annually exceeds the greater of $50.0 million and 20% of consolidated adjusted EBITDA unless the ratio of consolidated net debt to consolidated adjusted EBITDA is less than 2.0 to 1, in which case there is no such limitation on amount.
New Credit facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Letters Of Credit Outstanding Amount		$ 6,000
U.S. Term Loan [Member]
Debt Instrument [Line Items]
Credit facilities	600,000	570,000	600,000
Derivative Liability Notional Amount		$ 170,000
Derivative Fixed Interest Rate		3.10%
Derivative, Basis Spread on Variable Rate		1.64%
Deferred Finance Costs Noncurrent Gross		$ 15,500
Line of Credit Facility, Current Borrowing Capacity		600,000
EURO Term Loan [Member]
Debt Instrument [Line Items]
Credit facilities	150,000	157,062	151,188
Line of Credit Facility, Current Borrowing Capacity		150,000
The Revolver [Member]
Debt Instrument [Line Items]
Credit facilities	$ 400,000
Deferred Finance Costs Noncurrent Gross		8,300
Line of Credit Facility, Current Borrowing Capacity		400,000
The Revolver [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount		$ 234,000
Industrial Development Bond Due 2028 [Member]
Debt Instrument [Line Items]
Derivative Fixed Interest Rate				5.60%
Debt Instrument Maturity Date Description		2028		2018
Industrial Development Revenue Bond		$ 10,000		$ 5,000
Bank lines of credit and other debt obligations [Member]
Debt Instrument [Line Items]
Credit facilities		2,072	2,608
Debt Issuance Costs, Current, Net		$ 5,900	$ 7,600

Pension and Other Postretirement Benefits - Funded Status Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	$ 73	$ 73
Benefits Paid	(11,225)	(9,866)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	315,649	144,241
Actual Return on Plan Assets	31,126	24,121
Employer Contributions	9,214	6,310
Employee Contributions	73	73
Plan Settlements	(55,810)	(1,087)
Benefits Paid	(11,225)	(9,866)
Plan Expenses and Premiums Paid	(633)	(629)
Transfer In of Business Acquisition	0	146,987
Translation Difference	13,876	5,499
Fair Value of Plan Assets at End of Year	302,270	315,649	$ 144,241
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	6,748	0
Current Liabilities	(1,466)	(3,405)
Non-current Liabilities	(63,890)	(56,828)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	371,616	170,050
Service Cost	4,831	3,941	3,809
Interest Cost	6,339	6,359	4,101
Employee Contributions	73	73
Effect of Plan Amendments	50	30
Plan Settlements	(55,810)	(1,087)
Defined Benefit Plan, Curtailments	(2,324)	0
Benefits Paid	(11,225)	(9,866)
Plan Expenses and Premiums Paid	(135)	(129)
Transfer In of Business Acquisition	0	172,072
Actuarial (gain) Loss	29,248	24,478
Translation Difference and Other	14,981	5,695
Benefit Obligation at End of Year	357,644	371,616	170,050
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	315,649
Employee Contributions	73	73
Benefits Paid	(11,225)	(9,866)
Fair Value of Plan Assets at End of Year	91,555	315,649
Defined Benefit Plan, Funded Status of Plan	(55,374)	(55,967)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	6,748	0
Current Liabilities	(1,180)	(2,979)
Non-current Liabilities	(60,942)	(52,988)
Net Amount Recognized	(55,374)	(55,967)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	24	1,271
Accumulated Loss	(27,508)	(69,376)
Accumulated Other Comprehensive Loss ("AOCI")	(27,484)	(68,105)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(27,890)	12,138
Net Amount Recognized	(55,374)	(55,967)
Domestic plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	0	0
Benefits Paid	(6,138)	(6,034)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	120,550	49,415
Actual Return on Plan Assets	10,759	10,663
Employer Contributions	2,302	1,087
Employee Contributions	0	0
Plan Settlements	(53,494)	0
Benefits Paid	(6,138)	(6,034)
Plan Expenses and Premiums Paid	(498)	(500)
Transfer In of Business Acquisition	0	65,919
Translation Difference	0	0
Fair Value of Plan Assets at End of Year	73,481	120,550	49,415
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	153,723	58,734
Service Cost	491	434	383
Interest Cost	2,923	3,313	1,847
Employee Contributions	0	0
Effect of Plan Amendments	50	0
Plan Settlements	(53,494)	0
Defined Benefit Plan, Curtailments	0	0
Benefits Paid	(6,138)	(6,034)
Plan Expenses and Premiums Paid	0	0
Transfer In of Business Acquisition	0	86,414
Actuarial (gain) Loss	12,414	10,862
Translation Difference and Other	0	0
Benefit Obligation at End of Year	109,969	153,723	58,734
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	120,550
Employee Contributions	0	0
Benefits Paid	(6,138)	(6,034)
Fair Value of Plan Assets at End of Year	73,481	120,550
Defined Benefit Plan, Funded Status of Plan	(36,488)	(33,173)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	0	0
Current Liabilities	(612)	(2,620)
Non-current Liabilities	(35,876)	(30,553)
Net Amount Recognized	(36,488)	(33,173)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	50	0
Accumulated Loss	(5,532)	(46,560)
Accumulated Other Comprehensive Loss ("AOCI")	(5,482)	(46,560)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(31,006)	13,387
Net Amount Recognized	(36,488)	(33,173)
Domestic plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	4,266	4,106
Service Cost	5	6	7
Interest Cost	77	143	130
Employee Contributions	0	0
Effect of Plan Amendments	0	0
Plan Settlements	0	0
Defined Benefit Plan, Curtailments		0
Benefits Paid	(250)	(384)
Plan Expenses and Premiums Paid	0	0
Transfer In of Business Acquisition	0	0
Actuarial (gain) Loss	(864)	395
Translation Difference and Other	0	0
Benefit Obligation at End of Year	3,234	4,266	4,106
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employee Contributions	0	0
Benefits Paid	(250)	(384)
Defined Benefit Plan, Funded Status of Plan	(3,234)	(4,266)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	0	0
Current Liabilities	(286)	(426)
Non-current Liabilities	(2,948)	(3,840)
Net Amount Recognized	(3,234)	(4,266)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	0	0
Accumulated Loss	124	(734)
Accumulated Other Comprehensive Loss ("AOCI")	124	(734)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	(3,358)	(3,532)
Net Amount Recognized	(3,234)	(4,266)
Foreign [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	73	73
Benefits Paid	(5,087)	(3,832)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	195,099	94,826
Actual Return on Plan Assets	20,367	13,458
Employer Contributions	6,912	5,223
Employee Contributions	73	73
Plan Settlements	(2,316)
Benefits Paid	(5,087)	(3,832)
Plan Expenses and Premiums Paid	(135)	(129)
Transfer In of Business Acquisition	0	81,068
Translation Difference	13,876	5,499
Fair Value of Plan Assets at End of Year	228,789	195,099	94,826
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit Obligation at Beginning of Year	217,893	111,316
Service Cost	4,340	3,507	3,426
Interest Cost	3,416	3,046	2,254
Employee Contributions	73	73
Effect of Plan Amendments	0	30
Plan Settlements	(2,316)	(1,087)
Defined Benefit Plan, Curtailments	(2,324)	0
Benefits Paid	(5,087)	(3,832)
Plan Expenses and Premiums Paid	(135)	(129)
Transfer In of Business Acquisition	0	85,658
Actuarial (gain) Loss	16,834	13,616
Translation Difference and Other	14,981	5,695
Benefit Obligation at End of Year	247,675	217,893	111,316
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	195,099
Employee Contributions	73	73
Benefits Paid	(5,087)	(3,832)
Fair Value of Plan Assets at End of Year	18,074	195,099
Defined Benefit Plan, Funded Status of Plan	(18,886)	(22,794)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Non-current Asset	6,748	0
Current Liabilities	(568)	(359)
Non-current Liabilities	(25,066)	(22,435)
Net Amount Recognized	(18,886)	(22,794)
Amounts Not Yet Reflected in Net Periodic Benefit Costs and Included in Accumulated Other Comprehensive Income (Loss) [Abstract]
Prior Service credit (cost)	(26)	1,271
Accumulated Loss	(21,976)	(22,816)
Accumulated Other Comprehensive Loss ("AOCI")	(22,002)	(21,545)
Cumulative Employer Contributions In Excess Of (or Below) Net Periodic Benefit Cost	3,116	(1,249)
Net Amount Recognized	(18,886)	(22,794)
Foreign [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employee Contributions	0	0
Defined Benefit Plan, Curtailments	0
Benefits Paid	(250)	(384)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value of Plan Assets at Beginning of Year	0	0
Actual Return on Plan Assets	0	0
Employer Contributions	250	384
Employee Contributions	0	0
Plan Settlements	0	0
Benefits Paid	(250)	(384)
Plan Expenses and Premiums Paid	0	0
Transfer In of Business Acquisition	0	0
Translation Difference	0	0
Fair Value of Plan Assets at End of Year	$ 0	$ 0	$ 0

Pension and Other Postretirement Benefits - Information About Accumulated and Projected Benefit Obligations In Excess of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	$ 302,270	$ 315,649	$ 144,241
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	302,270	315,649	144,241
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	357,644	371,616	170,050
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	142,342	371,616
Accumulated Benefit Obligation	140,432	365,990
Fair Value of Plan Assets	91,555	315,649
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	142,342	371,616
Projected Benefit Obligation	357,644	371,616	170,050
Fair Value of Plan Assets	91,555	315,649
Domestic plan [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	73,481	120,550	49,415
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	73,481	120,550	49,415
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	109,969	153,723	58,734
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	109,969	153,723
Accumulated Benefit Obligation	109,540	152,930
Fair Value of Plan Assets	73,481	120,550
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	109,969	153,723
Projected Benefit Obligation	109,969	153,723	58,734
Fair Value of Plan Assets	73,481	120,550
Foreign [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	228,789	195,099	94,826
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Fair Value of Plan Assets	228,789	195,099	94,826
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected Benefit Obligation	247,675	217,893	111,316
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	32,373	217,893
Accumulated Benefit Obligation	30,892	213,060
Fair Value of Plan Assets	18,074	195,099
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract]
Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation	32,373	217,893
Projected Benefit Obligation	247,675	217,893	$ 111,316
Fair Value of Plan Assets	$ 18,074	$ 195,099

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details

Pension and Other Postretirement Benefits - Net Periodic Benefit Cost and Changes in Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period			$ 210
Recognition of amortization in net periodic benefit cost Prior service credit (cost)			116
Actuarial Loss			(3,159)
Effect of exchange rates on amounts Included in AOCI			(890)
Total Recognized in Other Comprehensive (Income) Loss			(4,143)
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)			1,779
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	$ 4,831	$ 3,941	3,809
Interest Cost	6,339	6,359	4,101
Expected Return on Plan Assets	(9,072)	(6,895)	(5,031)
Settlement Loss	22,579	258	2
Curtailment Charge	(1,155)	0
Actuarial Loss Amortization	2,996	3,105	(3,157)
Prior Service (Credit) Cost Amortization	(167)	(165)	(116)
Net Periodic Benefit Cost	26,351	6,603	5,922
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period	(58)	7,752
Recognition of amortization in net periodic benefit cost Prior service credit (cost)	1,375	196
Actuarial Loss	3,209	(3,362)
Other comprehensive income loss plan settlement	(22,706)	0
Other Comprehensive Income Loss Plan Curtailments	(3)	0
Effect of exchange rates on amounts Included in AOCI	1,535	(61)
Total Recognized in Other Comprehensive (Income) Loss	(16,648)	4,525
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)	9,703	11,128
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Total Recognized in Other Comprehensive (Income) Loss	(859)	395	(485)
Foreign [Member]
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period			663
Recognition of amortization in net periodic benefit cost Prior service credit (cost)			175
Actuarial Loss			(883)
Effect of exchange rates on amounts Included in AOCI			(890)
Total Recognized in Other Comprehensive (Income) Loss			(2,261)
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)			1,899
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	4,340	3,507	3,426
Interest Cost	3,416	3,046	2,254
Expected Return on Plan Assets	(4,262)	(3,668)	(2,228)
Settlement Loss	(88)	258	2
Curtailment Charge	(1,155)	0
Actuarial Loss Amortization	886	757	881
Prior Service (Credit) Cost Amortization	(167)	(165)	(175)
Net Periodic Benefit Cost	2,970	3,735	4,160
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period	(1,594)	3,826	(663)
Recognition of amortization in net periodic benefit cost Prior service credit (cost)	1,325	196	175
Actuarial Loss	(758)	(1,015)	(883)
Other comprehensive income loss plan settlement	(39)	0
Other Comprehensive Income Loss Plan Curtailments	(3)	0
Effect of exchange rates on amounts Included in AOCI	1,535	(61)	890
Total Recognized in Other Comprehensive (Income) Loss	466	2,946
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)	3,436	6,681	1,899
U.S. [Member]
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period			(453)
Recognition of amortization in net periodic benefit cost Prior service credit (cost)			(59)
Actuarial Loss			(2,276)
Effect of exchange rates on amounts Included in AOCI			0
Total Recognized in Other Comprehensive (Income) Loss			(1,882)
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)			(120)
U.S. [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	491	434	383
Interest Cost	2,923	3,313	1,847
Expected Return on Plan Assets	(4,810)	(3,227)	(2,803)
Settlement Loss	22,667	0	0
Curtailment Charge	0	0
Actuarial Loss Amortization	2,110	2,348	2,276
Prior Service (Credit) Cost Amortization	0	0	59
Net Periodic Benefit Cost	23,381	2,868	1,762
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period	1,536	3,926	453
Recognition of amortization in net periodic benefit cost Prior service credit (cost)	50	0	(59)
Actuarial Loss	3,967	(2,347)	(2,276)
Other comprehensive income loss plan settlement	(22,667)	0
Other Comprehensive Income Loss Plan Curtailments	0	0
Effect of exchange rates on amounts Included in AOCI	0	0	0
Total Recognized in Other Comprehensive (Income) Loss	(17,114)	1,579
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)	6,267	4,447	(120)
U.S. [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service Cost	5	6	7
Interest Cost	77	143	130
Prior Service (Credit) Cost Amortization	(5)	0	42
Net Periodic Benefit Cost	77	149	179
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Net Loss (Gain) Arising During The Period	(864)	395	(443)
Actuarial Loss	5	0	(42)
Total Recognized In Net Periodic Benefit Cost And Other Comprehensive Loss Or (Income)	$ (782)	$ 544	$ (306)

Pension and Other Postretirement Benefits - Assumptions Used in Determining Benefit Obligations and Net Periodic Pension Costs (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Health Care Cost Trend Rate For Next Year	5.70%	5.90%
Rate to Which the Cost Trend Rate is Assumed to Decline (Ultimate Trend Rate)	4.50%	4.50%
Year that Rate Reaches Ultimate Trend Rate	2037	2037
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate	2.19%	3.06%
Rate of Compensation Increase	6.00%	6.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate	3.11%	4.08%
Expected Long-Term Return on Plan Assets	6.50%	5.75%
Rate of Compensation Increase	6.00%	5.50%
Domestic plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate	2.05%	2.98%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate	2.99%	4.03%
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount Rate	1.79%	1.83%
Rate of Compensation Increase	2.74%	2.58%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate	2.30%	2.30%
Expected Long-Term Return on Plan Assets	2.20%	3.13%
Rate of Compensation Increase	2.79%	2.87%

Pension and Other Postretirement Benefits - Asset Allocations (Details) - Pension Plans, Defined Benefit [Member]	Dec. 31, 2020	Dec. 31, 2019
Domestic plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	100.00%
Actual Plan Asset Allocations	100.00%	100.00%
Domestic plan [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	10.00%
Actual Plan Asset Allocations	58.00%	32.00%
Domestic plan [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	90.00%
Actual Plan Asset Allocations	36.00%	64.00%
Domestic plan [Member] \| Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	0.00%
Actual Plan Asset Allocations	6.00%	4.00%
Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	100.00%
Actual Plan Asset Allocations	100.00%	100.00%
Foreign [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	37.00%
Actual Plan Asset Allocations	33.00%	34.00%
Foreign [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	53.00%
Actual Plan Asset Allocations	45.00%	45.00%
Foreign [Member] \| Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Plan Asset Allocations	10.00%
Actual Plan Asset Allocations	22.00%	21.00%

Pension and Other Postretirement Benefits - Level 3 Asset Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets at Beginning of Year	$ 315,649	$ 144,241
Translation Difference	13,876	5,499
Fair Value of Plan Assets at End of Year	302,270	315,649
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets at Beginning of Year	111,674	82,255
Purchases	4,909	4,791
Assets acquired in business combinations		16,101
Sales		(516)
Settlements	(2,027)	(1,730)
Realized Gains		0
Unrealized Gains	8,730	11,642
Translation Difference	10,047	(869)
Fair Value of Plan Assets at End of Year	133,333	111,674
Insurance Contract [Member] \| Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets at Beginning of Year	92,657	79,873
Purchases	3,902	3,762
Assets acquired in business combinations		129
Sales		0
Settlements	(2,027)	(1,730)
Realized Gains		0
Unrealized Gains	8,917	12,199
Translation Difference	9,471	(1,576)
Fair Value of Plan Assets at End of Year	112,920	92,657
Real Estate Fund [Member] \| Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets at Beginning of Year	9,581	2,382
Purchases	18	0
Assets acquired in business combinations		7,058
Sales		(238)
Settlements	0	0
Realized Gains		0
Unrealized Gains	(16)	403
Translation Difference	192	(24)
Fair Value of Plan Assets at End of Year	9,775	9,581
Other-alternative investments [Member] \| Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets at Beginning of Year	9,436	0
Purchases	989	1,029
Assets acquired in business combinations		8,914
Sales		(278)
Settlements	0	0
Realized Gains		0
Unrealized Gains	(171)	(960)
Translation Difference	384	731
Fair Value of Plan Assets at End of Year	$ 10,638	$ 9,436

Pension and Other Postretirement Benefits - Cash Flow (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	$ 10,000
2021	12,581
2022	12,237
2023	13,096
2024	12,979
2025	13,622
2025 to 2029	72,965
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	300
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	5,900
2021	5,923
2022	5,298
2023	6,072
2024	6,234
2025	6,228
2025 to 2029	30,443
Domestic plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
2021	286
2022	278
2023	265
2024	245
2025	226
2025 to 2029	923
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum Cash Contributions, Next Fiscal Year	4,100
2021	6,658
2022	6,939
2023	7,024
2024	6,745
2025	7,394
2025 to 2029	$ 42,522

Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Prior Service Cost Charge	$ 1,800
Defined Benefit Plan, Contributions by Employer	9,214	$ 6,310
Defined Benefit Plan Premium Refund	1,600
Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments 1	22,700
Total Contribution Amount	5,700	4,000	$ 3,100
Defined Benefit Plan Other Costs	$ 1,800
Pooled Separate account percentage	As of December 31, 2020, the U.S. pension plan pooled separate accounts included approximately 61 percent of investments in equity securities and 39 percent of investments in fixed income securities.
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	$ 344,400	366,000
Net Periodic Benefit Cost	26,351	6,603	5,922
Gross AOCI	$ (27,484)	(68,105)
Diversified investment fund - registered investment companies measured at NAV [Member] \| Defined Benefit Plan Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	62.00%
Diversified investment fund - registered investment companies measured at NAV [Member] \| Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	19.00%
Diversified investment fund - registered investment companies measured at NAV [Member] \| Other Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	19.00%
Commingled funds measured at NAV [Member] \| Defined Benefit Plan Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	35.00%
Commingled funds measured at NAV [Member] \| Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	51.00%
Commingled funds measured at NAV [Member] \| Other Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Additional Disclosures About Plan Assets	14.00%
Domestic plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 2,302	1,087
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	109,500	152,900
Net Periodic Benefit Cost	23,381	2,868	1,762
Gross AOCI	(5,482)	(46,560)
Domestic plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost	77	149	179
Gross AOCI	124	(734)
Domestic plan [Member] \| Supplemental Employee Retirement Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Net Periodic Benefit Cost	2,500	1,800	1,600
Foreign [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	6,912	5,223
Foreign [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	234,900	213,100
Net Periodic Benefit Cost	2,970	3,735	$ 4,160
Gross AOCI	(22,002)	(21,545)
Foreign [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 250	$ 384

Pension and Other Postretirement Benefits - Houghton and Cash Flow Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 9,214,000	$ 6,310,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Acquired pension balance	55,374,000	55,967,000
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	10,000,000
Pension Plans, Defined Benefit [Member] \| Cleveland Bakers and Teamsters Pension Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Plan Liabilities	0		$ 589,000,000
Multiemployer Plans Plan Assets		364,000,000
Multiemployer Plans Plan Contributions	100,000
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 300,000
Other Current and Other Non-current Liabilities [Member] \| Pension Plans, Defined Benefit [Member] \| Cleveland Bakers and Teamsters Pension Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plans Collective Bargaining Arrangement Expiration Date	May 01, 2022
Domestic plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 2,302,000	1,087,000
Domestic plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Acquired pension balance	36,488,000	33,173,000
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	5,900,000
Domestic plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Acquired pension balance	3,234,000	4,266,000
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	6,912,000	5,223,000
Foreign Plan [Member] \| Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Acquired pension balance	18,886,000	22,794,000
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	4,100,000
Foreign Plan [Member] \| Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 250,000	$ 384,000

Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Noncurrent [Abstract]
Restricted Insurance Settlements	$ 542	$ 19,678
Non-current income taxes payable	8,500	8,500
Uncertain Tax Positions (Includes Interest and Penalties)	28,961	24,609
Fair value of interst rate swaps	4,672	415
Environmental reserves	4,610	5,259
Deferred And Other Long-Term Compensation	6,257	6,625
Other	1,627	1,298
Total	$ 55,169	$ 66,384

Equity and Noncontrolling Interest - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Equity Class Of Treasury Stock [Line Items]
Common Stock Par Value	$ 1	$ 1
Common Stock Shares Authorized	30,000,000	30,000,000
Common Stock Shares, Issued	17,850,616	17,735,162
Shares issued for equity based comp plans	49,906
Shares issued for ESPP	0
Shares issued for Options exercise and Other activity	65,548
Preferred Stock Shares Authorized	10,000,000
Preferred Stock Par Or Stated Value Per Share	$ 1
2015 Share Repurchase [Member]
Equity Class Of Treasury Stock [Line Items]
Stock Repurchase Program Authorized Amount	$ 100.0
Stock Repurchase Program Remaining Authorize	$ 86.9

Equity and Noncontrolling Interest - AOCI Reclassifications (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$ (78,170)	$ (80,715)	$ (65,100)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	33,667	(798)	(18,508)
Amounts Reclassed from AOCI	23,939	2,868	3,520
Related Tax Amounts	(6,034)	475	(627)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(26,598)	(78,170)	(80,715)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(44,568)	(49,322)	(31,893)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	41,693	4,754	(17,429)
Amounts Reclassed from AOCI	0	0	0
Related Tax Amounts	0	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(2,875)	(44,568)	(49,322)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(34,533)	(30,551)	(34,093)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	(6,617)	(8,088)	1,543
Amounts Reclassed from AOCI	24,141	3,169	3,085
Related Tax Amounts	(6,458)	937	(1,086)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(23,467)	(34,533)	(30,551)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(320)	0	0
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	(4,257)	(415)	0
Amounts Reclassed from AOCI	0	0	0
Related Tax Amounts	979	95	0
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(3,598)	(320)	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	1,251	(842)	886
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	2,848	2,951	(2,622)
Amounts Reclassed from AOCI	(202)	(301)	435
Related Tax Amounts	(555)	(557)	459
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ 3,342	$ 1,251	$ (842)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References + Details

Fair Value - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	$ 1,961	$ 1,782
Assets Fair Value Disclosure	1,961	1,782
Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	0	0
Assets Fair Value Disclosure	0	0
Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	1,961	1,782
Assets Fair Value Disclosure	1,961	1,782
Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Company Owned Life Insurance	0	0
Assets Fair Value Disclosure	$ 0	$ 0

Hedging Activities - Narrative (Details) $ in Millions	Nov. 30, 2019 USD ($)
Interest Rate Swap [Member] \| Other Liabilities Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability Notional Amount	$ 170.0

Hedging Activities - Table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	$ 4,672	$ 415
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	3,598	320
Interest Expense [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net	(1,754)	29	$ 0
Interest Rate Swap [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	3,598	320
Interest Rate Swap [Member] \| Other Noncurrent Liabilities [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net	$ 4,672	$ 415

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2007	Dec. 31, 2005	Dec. 31, 2019
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms	Prior to December 2020, the Company had restricted cash recorded in other assets related to proceeds from an inactive subsidiary of the Company which previously executed separate settlement and release agreements with two of its insurance carriers for an original total value of $35.0 million.
Percentage of defense and indemnity costs		27.00%
Indemnification assets	$ 7,615			$ 4,006
Maximum [Member]
Loss Contingencies [Line Items]
Unrelated Environmental Liability Accruals	200
Minimum [Member]
Loss Contingencies [Line Items]
Unrelated Environmental Liability Accruals	100
ACP [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	1,000
ACP [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	100
Asbestos claims [Member]
Loss Contingencies [Line Items]
Loss Contingency, Settlement Agreement, Terms		20.0	15.0
Asbestos claims [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	500
Houghton environmental matters [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	6,000			$ 6,600
Houghton environmental matters [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	6,500
Houghton environmental matters [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	5,500
Foreign Consumption Tax [Member]
Loss Contingencies [Line Items]
Indemnification assets	1,500
Business Combination Indemnification Assets Related to Former Ownership	22,000
Other Assets Miscellaneous Current	1,100
Other Selling General And Administrative Expense	400
Income Tax Reconciliation Tax Settlements Foreign	9,000
Foreign Consumption Tax [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	34,000
Foreign Consumption Tax [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 400