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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
Basic and diluted earnings (loss) per common share ("EPS") are calculated as follows:
  
Quarter Ended June 30,
 
Six Months Ended June 30,
(In thousands, except per share amounts)
2014
 
2013
 
2014
 
2013
Net income (loss)
$
17,836

 
$
31,100

 
$
(6,767
)
 
$
33,477

 
 
 
 
 
 
 
 
Weighted average common shares outstanding (used to calculate basic EPS)
46,915

 
46,481

 
46,883

 
46,426

Dilutive effect of stock options and other stock awards
1,212

 
835

 
—

 
769

Weighted average common shares outstanding (used to calculate diluted EPS)
48,127

 
47,316

 
46,883

 
47,195

 
 
 
 
 
 
 
 
Earnings (loss) per common share – basic
$
0.38

 
$
0.67

 
$
(0.14
)
 
$
0.72

Earnings (loss) per common share – diluted
$
0.37

 
$
0.66

 
$
(0.14
)
 
$
0.71