Earnings Per Share - Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 12,730	$ 13,619
Less: Income Allocated to Participating Securities	(112)	(111)
Net Income Available to Common Shareholders	$ 12,618	$ 13,508
Basic Weighted Average Common Shares Outstanding	13,091,503	13,001,963
Effect of Dilutive Securities	19,649	29,937
Diluted Weighted Average Common Shares Outstanding	13,111,152	13,031,900
Diluted Earnings per Common Share	$ 0.96	$ 1.04