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Earnings per Common Share (Tables)
 6 Months Ended
Jun. 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 
 June 30,
 
Six Months Ended 
 June 30,
(In thousands)
 
2017
 
2016
 
2017
 
2016
Weighted-average shares - basic
 
464,768

 
465,068

 
465,057

 
448,455

Dilution effect of stock appreciation rights and stock awards at end of period
 
1,977

 
—

 
1,695

 
—

Weighted-average shares - diluted
 
466,745

 
465,068

 
466,752

 
448,455
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 
 June 30,
 
Six Months Ended 
 June 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
 
—

 
1,569

 
—

 
1,168

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

 
—

 
774

 
827

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

 
1,569

 
774

 
1,995