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Basic Income Per Common Share and Diluted Income Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Reconciliation of the numerator and denominator used in computing the basic and diluted net (loss) income per share
The following represents a reconciliation of the numerator and denominator used in computing basic and diluted income available to common stockholders per common share for the years ended December 31, 2012, 2011 and 2010:
 
 
Years Ended December 31,
 
 
2012
 
2011
 
2010
Income (numerator)
 
 
 
 
 
 
Net loss
 
$
(62,627
)
 
$
(12,570
)
 
$
(149,201
)
Shares (denominator)
 
 
 
 
 
 
Basic weighted-average common shares outstanding
 
90,011

 
92,068

 
92,666

Diluted weighted-average common shares outstanding
 
90,011

 
92,068

 
92,666

Basic and diluted per share amounts
 
 
 
 
 
 
Basic net loss per share
 
$
(0.70
)
 
$
(0.14
)
 
$
(1.61
)
Diluted net loss per share
 
$
(0.70
)
 
$
(0.14
)
 
$
(1.61
)