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Earnings per Common Share (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Calculation of basic and diluted weighted-average shares outstanding
The following is a calculation of basic and diluted weighted-average shares outstanding:
 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
(In thousands)
 
2017
 
2016
 
2017
 
2016
Weighted-average shares - basic
 
462,498

 
465,149

 
464,194

 
454,060

Dilution effect of stock appreciation rights and stock awards at end of period
 
2,282

 
—

 
1,816

 
—

Weighted-average shares - diluted
 
464,780

 
465,149

 
466,010

 
454,060
Calculation of weighted-average shares excluded from diluted EPS due to the anti-dilutive effect
The following is a calculation of weighted-average shares excluded from diluted EPS due to the anti-dilutive effect:
 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
(In thousands)
 
2017
 
2016
 
2017
 
2016
Weighted-average stock appreciation rights and stock awards excluded from diluted EPS due to the anti-dilutive effect due to net loss
 
—

 
1,784

 
—

 
1,326

Weighted-average stock appreciation rights and stock awards excluded from diluted EPS due to the anti-dilutive effect calculated using the treasury stock method
 
2

 
—

 
6

 
1

Weighted-average stock appreciation rights and stock awards excluded from diluted EPS due to the anti-dilutive effect
 
2

 
1,784

 
6

 
1,327