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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the computation of basic and diluted earnings per share (shares in thousands):
 
 
Year Ended December 31, 
 
2013
 
2012
 
2011
Numerator:
 
 
 
 
 
Net income
$
387

 
$
75

 
$
101

Convertible debt interest—1 7/8 percent notes
—

 
—

 
—

Net income available to common stockholders
$
387

 
$
75

 
$
101

Denominator:
 
 
 
 
 
Denominator for basic earnings per share—weighted-average common shares
93,436

 
82,960

 
62,184

Effect of dilutive securities:
 
 
 
 
 
Employee stock options and warrants
504

 
720

 
1,037

Convertible subordinated notes—1 7/8 percent
—

 
—

 
1,015

Convertible subordinated notes—4 percent
11,769

 
10,632

 
8,532

Restricted stock units
582

 
536

 
581

Denominator for diluted earnings per share—adjusted weighted-average common shares
106,291

 
94,848

 
73,349

Basic earnings per share
$
4.14

 
$
0.91

 
$
1.62

Diluted earnings per share
$
3.64

 
$
0.79

 
$
1.38