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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents a reconciliation of the numerators and denominators of the basic income per share and diluted income per share computations (amounts in thousands, except per share data):
 
Year ended December 31,
 
2013
 
2012
 
2011
Basic
 
 
 
 
 
Net income (loss)
$
(35,932
)
 
$
30,032

 
$
11,177

Weighted-average shares
62,213

 
61,780

 
57,390

Income (loss) per share
$
(0.58
)
 
$
0.49

 
$
0.19

Diluted
 
 
 
 
 
Net income (loss)
$
(35,932
)
 
$
30,032

 
$
11,177

Weighted average shares:
 
 
 
 
 
Outstanding
62,213

 
61,780

 
57,390

Diluted effect of stock options, restricted stock,
and restricted stock unit awards
—

 
982

 
1,389

 
62,213

 
62,762

 
58,779

Income (loss) per share
$
(0.58
)
 
$
0.48

 
$
0.19