Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Net sales	$ 493,842	$ 462,274	$ 1,420,156	$ 1,395,600
Cost of goods sold (excluding amortization expense - See Note 13)	312,977	289,725	906,308	865,770
Gross profit	180,865	172,549	513,848	529,830
Selling, general and administrative expenses	126,479	118,221	372,125	359,350
Impairment charges	0	0	88,840	0
Restructuring and related charges, net	7,745	2,610	31,128	4,787
Operating income	46,641	51,718	21,755	165,693
Other (expense) income, net	(270)	783	(1,632)	2,285
Interest expense	(10,941)	(10,347)	(33,265)	(31,925)
Income (loss) before taxes and equity in net income of associated companies	35,430	42,154	(13,142)	136,053
Taxes on income before equity in net income of associated companies	9,266	12,167	22,280	40,453
Income (loss) before equity in net income of associated companies	26,164	29,987	(35,422)	95,600
Equity in net income of associated companies	4,322	2,385	12,262	6,940
Net income (loss)	30,486	32,372	(23,160)	102,540
Less: Net income attributable to noncontrolling interest	17	26	29	82
Net income (loss) attributable to Quaker Chemical Corporation	$ 30,469	$ 32,346	$ (23,189)	$ 102,458
Per share data:
Net income attributable to Quaker Chemical Corporation common shareholders – basic (in dollars per share)	$ 1.75	$ 1.81	$ (1.32)	$ 5.71
Net income attributable to Quaker Chemical Corporation common shareholders – diluted (in dollars per share)	1.75	1.81	(1.32)	5.70
Dividends declared (in dollars per share)	$ 0.508	$ 0.485	$ 1.478	$ 1.395