Condensed Consolidated Statement of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net Sales	$ 212,918	$ 190,428	$ 609,010	$ 555,420
Cost of goods sold	138,142	119,531	391,512	345,141
Gross profit	74,776	70,897	217,498	210,279
Selling, general and administrative expenses	51,092	47,877	148,740	144,720
Combination-related expenses	9,675	1,157	23,088	1,157
Operating income	14,009	21,863	45,670	64,402
Other Income (Expense), Net	249	(10)	(1,427)	(245)
Interest Expense	(793)	(758)	(2,229)	(2,226)
Interest Income	762	551	1,825	1,444
Income Before Taxes and Equity in Net Income of Associated Companies	14,227	21,646	43,839	63,375
Taxes on income before equity in net income of associated companies	3,140	6,121	14,229	19,664
Income before equity in net income of associated companies	11,087	15,525	29,610	43,711
Equity in net income of associated companies	617	826	2,049	1,389
Net Income	11,704	16,351	31,659	45,100
Less: Net income attributable to noncontrolling interest	562	343	1,619	1,131
Net Income Attributable to Quaker Chemical Corporation	$ 11,142	$ 16,008	$ 30,040	$ 43,969
Per share data:
Basic Earnings Per Common Share	$ 0.84	$ 1.21	$ 2.26	$ 3.32
Diluted Earnings per Common Share	0.83	1.21	2.25	3.32
Dividends Declared	$ 0.355	$ 0.345	$ 1.055	$ 1.01