Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 11,142	$ 16,008	$ 30,040	$ 43,969
Less: Income Allocated to Participating Securities	(76)	(130)	(222)	(373)
Net Income Available to Common Shareholders	$ 11,066	$ 15,878	$ 29,818	$ 43,596
Basic Weighted Average Common Shares Outstanding	13,217,165	13,143,884	13,196,255	13,128,996
Effect of Dilutive Securities	34,528	29,960	41,818	18,829
Diluted Weighted Average Common Shares Outstanding	13,251,693	13,173,844	13,238,073	13,147,825
Diluted Earnings per Common Share	$ 0.83	$ 1.21	$ 2.25	$ 3.32