Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 15,038	$ 15,427	$ 25,416	$ 28,157
Less: Income Allocated to Participating Securities	(131)	(134)	(229)	(245)
Net Income Available to Common Shareholders	$ 14,907	$ 15,293	$ 25,187	$ 27,912
Basic Weighted Average Common Shares Outstanding	13,220,264	13,118,025	13,204,599	13,104,837
Basic Earnings Per Common Share	$ 1.13	$ 1.17	$ 1.91	$ 2.13