Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 19,246	$ 11,906	$ 31,978	$ 18,898
Less: Income Allocated to Participating Securities	(83)	(82)	(147)	(145)
Net Income Available to Common Shareholders	$ 19,163	$ 11,824	$ 31,831	$ 18,753
Basic Weighted Average Common Shares Outstanding	13,267,504	13,195,053	13,256,327	13,185,627
Basic Earnings Per Common Share	$ 1.44	$ 0.9	$ 2.4	$ 1.42