Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 11,906	$ 15,015	$ 18,898	$ 27,961
Less: Income Allocated to Participating Securities	(82)	(130)	(145)	(243)
Net Income Available to Common Shareholders	$ 11,824	$ 14,885	$ 18,753	$ 27,718
Basic Weighted Average Common Shares Outstanding	13,195,053	13,126,134	13,185,627	13,121,470
Effect of Dilutive Securities	45,226	18,579	45,310	15,183
Diluted Weighted Average Common Shares Outstanding	13,240,279	13,144,713	13,230,937	13,136,653
Diluted Earnings per Common Share	$ 0.89	$ 1.13	$ 1.42	$ 2.11