Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2012

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

		December 31,
		2012		2011		2010
					(re-cast)		(re-cast)
Basic earnings per common share
	Net income attributable to Quaker Chemical Corporation	$	47,405	$	45,892	$	32,120
	Less: income allocated to participating securities		(526)		(825)		(660)
	Net income available to common shareholders	$	46,879	$	45,067	$	31,460
	Basic weighted average common shares outstanding		12,871,703		12,159,958		11,039,410
Basic earnings per common share		$	3.64	$	3.71	$	2.85
Diluted earnings per common share
	Net income attributable to Quaker Chemical Corporation	$	47,405	$	45,892	$	32,120
	Less: income allocated to participating securities		(524)		(817)		(652)
	Net income available to common shareholders	$	46,881	$	45,075	$	31,468
	Basic weighted average common shares outstanding		12,871,703		12,159,958		11,039,410
	Effect of dilutive securities		58,798		158,215		202,551
	Diluted weighted average common shares outstanding		12,930,501		12,318,173		11,241,961
Diluted earnings per common share		$	3.63	$	3.66	$	2.80