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Earnings per Share
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings per Share
Net income is divided by the weighted average number of common shares outstanding during the period to calculate basic earnings per share. Diluted earnings per share is calculated to give effect to stock options and restricted share awards. The following table summarizes the dilutive effect of restricted shares and options to purchase common stock for the three and six months ended June 30, 2017 and 2016:
 
 
Three months ended
June 30,
 
Six months ended
June 30,
 
 
2017
 
2016
 
2017
 
2016
Weighted average common shares—basic
 
45,717,697

 
45,429,851

 
45,644,096

 
45,354,421

Dilutive effect of restricted share awards
 
162,153

 
215,881

 
222,996

 
251,035

Dilutive effect of stock options
 
42,566

 
80,616

 
48,595

 
85,126

Weighted average common shares—diluted
 
45,922,416

 
45,726,348

 
45,915,687

 
45,690,582