Debt	3 Months Ended
Debt	Mar. 31, 2021
Debt [Abstract]
Debt Disclosure [Text Block]	Note 15 – Debt Debt as of March 31, 2021 and December 31, 2020 includes the following: As of March 31, 2021 As of December 31, 2020 Interest Outstanding Interest Outstanding Rate Balance Rate Balance Credit Facilities: Revolver 1.61% $ 190,000 1.65% $ 160,000 U.S. Term Loan 1.61% 562,500 1.65% 570,000 EURO Term Loan 1.50% 148,210 1.50% 157,062 Industrial development bonds 5.26% 10,000 5.26% 10,000 Bank lines of credit and other debt obligations Various 2,377 Various 2,072 Total debt $ 913,087 $ 899,134 Less: debt issuance costs (10,324) (11,099) Less: short-term and current portion of long-term debts (43,330) (38,967) Total long -term debt $ 859,433 $ 849,068 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 as of and during the three months ended March 31, 2021 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 $ 204 million, net of bank letters of credit of approximately $ 6 million, as of March 31, 2021. 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 March 31, 2021, 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 March 31, 2021 and December 31, 2020, 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 three months ended March 31, 2021, the Company made quarterly amortization payments related to the Term Loans totaling $ 9.6 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 March 31, 2021, the aggregate interest rate on the swaps, including the fixed base rate plus an applicable margin, was 3.1 %. See Note 18 of Notes to Condensed 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 Condensed 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 Condensed Consolidated Balance Sheet. These capitalized costs are being amortized into interest expense over the five-year term of the Credit Facility. As of March 31, 2021 and December 31, 2020, the Company had $ 10.3 million and $ 11.1 million, respectively, of debt issuance costs recorded as a reduction of long-term debt. As of March 31, 2021 and December 31, 2020, the Company had $ 5.5 million and $ 5.9 million, respectively, of debt issuance costs recorded within other assets. Industrial development bonds As of March 31, 2021 and December 31, 2020, 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. 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 March 31, 2021 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 March 31, 2021 were approximately $ 9 million. The Company incurred the following debt related expenses included within Interest expense, net, in the Condensed Consolidated Statements of Operations: Three Months Ended March 31, 2021 2020 Interest expense $ 4,650 $ 7,712 Amortization of debt issuance costs 1,187 1,187 Total $ 5,837 $ 8,899 Based on the variable interest rates associated with the Credit Facility, as of March 31, 2021 and December 31, 2020, the amounts at which the Company’s total debt were recorded are not materially different from their fair market value.