Earnings Per Share - Basic (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net Income Attributable to Quaker Chemical Corporation	$ 11,906	$ 15,015	$ 18,898	$ 27,961
Less: Income Allocated to Participating Securities	(82)	(130)	(145)	(243)
Net Income Available to Common Shareholders	$ 11,824	$ 14,885	$ 18,753	$ 27,718
Basic Weighted Average Common Shares Outstanding	13,195,053	13,126,134	13,185,627	13,121,470
Basic Earnings Per Common Share	$ 0.9	$ 1.13	$ 1.42	$ 2.11

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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