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Earnings per common share
6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Earnings per common share
Earnings per common share
Basic earnings per common share were computed by dividing earnings on common stock by the weighted average number of shares of common stock outstanding during the applicable period. Diluted earnings per common share were computed by dividing earnings on common stock by the total of the weighted average number of shares of common stock outstanding during the applicable period, plus the effect of outstanding performance share awards. Common stock outstanding includes issued shares less shares held in treasury. Net income was the same for both the basic and diluted earnings per share calculations. A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings per share calculations was as follows:
 
Three Months Ended
Six Months Ended
 
June 30,
June 30,
 
2014

2013

2014

2013

 
(In thousands)
Weighted average common shares outstanding - basic
192,060

188,831

190,946

188,831

Effect of dilutive performance share awards
599

632

597

629

Weighted average common shares outstanding - diluted
192,659

189,463

191,543

189,460

Shares excluded from the calculation of diluted earnings per share