Condensed Consolidated Statement of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Net Sales	$ 184,846	$ 176,797	$ 361,039	$ 354,435
Cost of goods sold	117,532	116,161	231,117	234,004
Gross profit	67,314	60,636	129,922	120,431
Selling, general and administrative expenses	47,521	43,653	92,718	86,746
Operating income	19,793	16,983	37,204	33,685
Other Income, Net	2,301	(134)	2,647	207
Interest Expense	(762)	(1,151)	(1,506)	(2,325)
Interest Income	229	137	398	260
Income Before Taxes and Equity in Net Income of Associated Companies	21,561	15,835	38,743	31,827
Taxes on income before equity in net income of associated companies	6,828	4,874	10,961	8,319
Income before equity in net income of associated companies	14,733	10,961	27,782	23,508
Equity in net income of associated companies	1,942	777	3,084	1,342
Net Income	16,675	11,738	30,866	24,850
Less: Net income attributable to noncontrolling interest	592	630	1,164	1,377
Net Income Attributable to Quaker Chemical Corporation	$ 16,083	$ 11,108	$ 29,702	$ 23,473
Per share data:
Basic Earnings Per Common Share	$ 1.22	$ 0.86	$ 2.26	$ 1.81
Diluted Earnings per Common Share	$ 1.22	$ 0.85	$ 2.26	$ 1.80
Dividends Declared	$ 0.25	$ 0.245	$ 0.495	$ 0.485