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Earnings (Loss) Per Share Earnings (Loss) Per Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings (Loss) Per Share [Table Text Block]
The following data shows the amounts used in computing earnings (loss) per share:
 
Income (Loss)
(Numerator)
 
Weighted
Shares
(Denominator)
 
Per-Share
Amount
 
(In thousands except per share amounts)
For the year ended December 31, 2013:
 
 
 
 
 
Basic earnings per common share
$
184,746

 
48,218

 
$
3.83

Effect of dilutive stock options, restricted stock, and SARs
—

 
354

 
(0.03
)
Diluted earnings per common share
$
184,746

 
48,572

 
$
3.80

For the year ended December 31, 2014:
 
 
 
 
 
Basic earnings per common share
$
136,276

 
48,611

 
$
2.80

Effect of dilutive stock options, restricted stock, and SARs
—

 
472

 
(0.02
)
Diluted earnings per common share
$
136,276

 
49,083

 
$
2.78

For the year ended December 31, 2015:
 
 
 
 
 
Basic earnings (loss) per common share
$
(1,037,361
)
 
49,110

 
$
(21.12
)
Effect of dilutive stock options, restricted stock, and SARs
—

 
—

 
—

Diluted earnings (loss) per common share
$
(1,037,361
)
 
49,110

 
$
(21.12
)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:
 
2015
 
2014
 
2013
Options and SARs
261,270

 
73,500

 
149,665

Average exercise price
$
50.34

 
$
64.43

 
$
58.41