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Earnings (loss) per common share
9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings (loss) per common share Earnings (loss) per common share
Basic earnings (loss) per common share were computed by dividing earnings (loss) on common stock by the weighted average number of shares of common stock outstanding during the applicable period. Diluted earnings (loss) per common share were computed by dividing earnings (loss) 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 (loss) was the same for both the basic and diluted earnings (loss) per share calculations. A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings (loss) per share calculations was as follows:
 
Three Months Ended
Nine Months Ended
 
September 30,
September 30,
 
2017

2016

2017

2016

 
(In thousands)
Weighted average common shares outstanding - basic
195,304

195,304

195,304

195,298

Effect of dilutive performance share awards
479

507

618

496

Weighted average common shares outstanding - diluted
195,783

195,811

195,922

195,794

Shares excluded from the calculation of diluted earnings per share