Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 15,015	$ 15,038	$ 27,961	$ 25,416
Less: Income Allocated to Participating Securities	(130)	(131)	(243)	(229)
Net Income Available to Common Shareholders	$ 14,885	$ 14,907	$ 27,718	$ 25,187
Basic Weighted Average Common Shares Outstanding	13,126,134	13,220,264	13,121,470	13,204,599
Effect of Dilutive Securities	18,579	19,411	15,183	19,251
Diluted Weighted Average Common Shares Outstanding	13,144,713	13,239,675	13,136,653	13,223,850
Diluted Earnings per Common Share	$ 1.13	$ 1.13	$ 2.11	$ 1.9