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Net Loss Per Share
 9 Months Ended
Sep. 30, 2013
Net Loss Per Share [Abstract]  
Net Loss Per Share
5.Net Loss Per Share

Our basic net loss per share amounts are computed by dividing net loss by the weighted-average number of common shares outstanding during the period. At the end of the 2012 periods presented below, 33,627 shares of unvested restricted stock with non-forfeitable rights to dividends were outstanding; all such shares were vested at the end of September 30, 2013 period. The allocation of 2012 net losses to these participating securities pursuant to the two-class method is not material to both basic and diluted earnings per share. For each of the periods presented below, we reported a net loss and, therefore, potential dilutive common shares were not included in computing diluted net loss per share since it would have been anti-dilutive. The calculations of net loss per share, basic and diluted, are as follows:

 
 
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
)

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