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Net Loss Per Share (Tables)
 9 Months Ended
Sep. 30, 2013
Net Loss Per Share [Abstract]  
Calculation of net loss per share, basic and diluted
 
 
Net Loss
 (Numerator)
  
Weighted Average Common Shares
 (Denominator)
(in thousands)
  
Per Share
 Amount
 
Three months ended September 30, 2013
 
  
  
 
Basic and diluted
 
$
(10,500
)
  
60,599
  
$
(0.17
)
Nine months ended September 30, 2013
            
Basic and diluted
 
$
(34,021
)
  
54,104
  
$
(0.63
)
Three months ended September 30, 2012
            
Basic and diluted
 
$
(11,301
)
  
33,848
  
$
(0.33
)
Nine months ended September 30, 2012
            
Basic and diluted
 
$
(35,107
)
  
33,803
  
$
(1.04
)
Schedule of antidilutive common shares excluded from computation of diluted earnings per share
For these periods, anti-dilutive common shares excluded from diluted per share amounts consist of the following:

 
 
Three Months Ended September 30,
 
 
2013
  
2012
 
 
Weighted
Average
Number
(in thousands)
  
Weighted
Average
Exercise Price
  
Weighted
Average
Number
(in thousands)
  
Weighted
Average
Exercise Price
Options
  
6,068
  
$
11.14
   
6,035
  
$
12.22
Unvested restricted stock
  
-
       
33
    
Total
  
6,068
       
6,068
    

 
 
 
Nine Months Ended September 30,
 
 
2013
  
2012
 
 
Weighted
Average
Number
(in thousands)
  
Weighted
Average
Exercise Price
  
Weighted
Average
Number
(in thousands)
  
Weighted
Average
Exercise Price
Options
  
6,047
  
$
11.69
   
6,019
  
$
12.31
Unvested restricted stock
  
-
       
68
    
Total
  
6,047
       
6,087