Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 378,561	$ 211,210
Cost of goods sold	244,710	135,443
Gross profit	133,851	75,767
Selling, general and administrative expenses	98,701	51,455
Indefinite-lived intangible asset impairment	38,000	0
Restructuring and related charges	1,716	0
Combination and other acquisition-related expenses	7,878	4,483
Operating (loss) income	(12,444)	19,829
Other income (expense), net	(21,175)	(635)
Interest expense, net	(8,461)	(776)
(Loss) income before taxes and equity in net income of associated companies	(42,080)	18,418
Taxes on (loss) income before equity in net income of associated companies	(13,070)	4,929
(Loss) income before equity in net income of associated companies	(29,010)	13,489
Equity in net income of associated companies	666	411
Net (loss) income	(28,344)	13,900
Less: Net income attributable to noncontrolling interest	37	56
Net (loss) income attributable to Quaker Chemical Corporation	$ (28,381)	$ 13,844
Per share data:
Basic (loss) earnings per common share	$ (1.60)	$ 1.04
Diluted (loss) earnings per common share	$ (1.60)	$ 1.03