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Earnings Per Share
9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]

Note 10 – Earnings Per Share

The following table summarizes earnings per share calculations for the three and nine months ended September 30, 2017 and 2016:

Three Months Ended Nine Months Ended
September 30, September 30,
2017201620172016
Basic earnings per common share
Net income attributable to Quaker Chemical Corporation$ 11,142$16,008$ 30,040$43,969
Less: income allocated to participating securities (76) (130) (222) (373)
Net income available to common shareholders$ 11,066$15,878$ 29,818$43,596
Basic weighted average common shares outstanding13,217,16513,143,88413,196,25513,128,996
Basic earnings per common share$0.84$1.21$2.26$3.32
Diluted earnings per common share
Net income attributable to Quaker Chemical Corporation$11,142$16,008$30,040$43,969
Less: income allocated to participating securities(76)(130)(222)(373)
Net income available to common shareholders$11,066$15,878$29,818$43,596
Basic weighted average common shares outstanding13,217,16513,143,88413,196,25513,128,996
Effect of dilutive securities34,52829,96041,81818,829
Diluted weighted average common shares outstanding13,251,69313,173,84413,238,07313,147,825
Diluted earnings per common share$0.83$1.21$2.25$3.32

Certain stock options and restricted stock units are not included in the diluted earnings per share calculation since the effect would have been anti-dilutive. The calculated amount of anti-diluted shares not included were 4,300 and 4,819 for the three and nine months ended September 30, 2017, respectively, and 0 and 3,465 for the three and nine months ended September 30, 2016, respectively.