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Earnings Per Share - Basic (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Earnings Per Share [Abstract]        
Net Income Attributable to Quaker Chemical Corporation $ 12,551 $ 10,925 $ 42,253 $ 34,398
Less: Income Allocated to Participating Securities (109) (103) (358) (402)
Net Income Available to Common Shareholders $ 12,442 $ 10,822 $ 41,895 $ 33,996
Basic Weighted Average Common Shares Outstanding 13,062,417 12,937,417 13,034,289 12,840,029
Basic Earnings Per Common Share $ 0.95 $ 0.84 $ 3.21 $ 2.65