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Earnings per Share Earnings per Share (Tables)
 12 Months Ended
Dec. 31, 2013
Loss per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The table below presents a reconciliation between basic and diluted weighted average shares outstanding, net income (loss) available to common shareholders and basic and diluted income (loss) per share for the year ended December 31, 2013, 2012 and 2011:
 
Year Ended December 31,
(In thousands, except per share amounts)
2013
 
2012
 
2011
NUMERATOR
 
 
 
 
 
Net income (loss)
$
151,423

 
$
13,347

 
$
(33,877
)
Preferred stock dividends
(3,656
)
 
—

 
—

Excess of fair value over book value of preferred shares redeemed
(2,190
)
 
—

 
—

Net income (loss) available to common shareholders
145,577

 
13,347

 
(33,877
)
Interest on 3.25% convertible senior subordinated notes due 2017
2,443

 
—

 
—

Interest on 3.00% convertible senior subordinated notes due 2018
2,675

 
—

 
—

Diluted income (loss) available to common shareholders
150,695

 
13,347

 
(33,877
)
DENOMINATOR
 
 
 
 
 
Basic weighted average shares outstanding
23,822

 
19,651

 
18,698

Effect of dilutive securities:
 
 
 
 
 
Stock option awards
237

 
92

 
—

Deferred compensation awards
123

 
148

 
—

3.25% convertible senior subordinated notes due 2017
2,416

 
—

 
—

3.00% convertible senior subordinated notes due 2018
2,165

 
—

 
—

Diluted weighted average shares outstanding - adjusted for assumed conversions
28,763

 
19,891

 
18,698

Earnings (loss) per common share
 
 
 
 
 
Basic
$
6.11

 
$
0.68

 
$
(1.81
)
Diluted
$
5.24

 
$
0.67

 
$
(1.81
)
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share
963

 
1,538

 
2,170