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Earnings (loss) Per Common Share (Tables)
 3 Months Ended
Mar. 31, 2012
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 (loss) per share and diluted income (loss) per share computations (amounts in thousands, except per share data):
 
 
Three months ended March 31,
 
2012
 
2011
Basic
 
 
 
Net income (loss)
$
14,172

 
$
(6,035
)
Weighted-average shares
61,578

 
53,968

Income (loss) per share
$
0.23

 
$
(0.11
)
Diluted
 
 
 
Net income (loss)
$
14,172

 
$
(6,035
)
Effect of dilutive securities
—

 
—

Net income (loss) available to common shareholders after assumed conversion
$
14,172

 
$
(6,035
)
Weighted average shares:
 
 
 
Outstanding
61,578

 
53,968

Diluted effect of stock options, restricted stock, and restricted stock unit awards
1,069

 
—

 
62,647

 
53,968

Income (loss) per share
$
0.23

 
$
(0.11
)