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Earnings (Loss) Per Share (Tables)
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Schedule of earnings per share
The following table sets forth the computation of basic and diluted earnings (loss) per share (shares in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Numerator:
 
 
 
 
 
 
 
Net income (loss) available to common stockholders
$
83

 
$
(52
)
 
104

 
(39
)
Denominator:
 
 
 
 
 
 
 
Denominator for basic earnings (loss) per share—weighted-average common shares
93,895

 
83,231

 
93,604

 
73,181

Effect of dilutive securities:
 
 
 
 
 
 
 
Employee stock options and warrants
498

 
—

 
557

 
—

Convertible subordinated notes—4 percent
11,946

 
—

 
11,908

 
—

Restricted stock units
376

 
—

 
488

 
—

Denominator for diluted earnings (loss) per share—adjusted weighted-average common shares
106,715

 
83,231

 
106,557

 
73,181

Basic earnings (loss) per share
$
0.89

 
$
(0.63
)
 
$
1.12

 
$
(0.53
)
Diluted earnings (loss) per share
$
0.78

 
$
(0.63
)
 
$
0.98

 
$
(0.53
)