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Net Income (Loss) Per Common Share
9 Months Ended
Sep. 30, 2011
Net Income (Loss) Per Common Share [Abstract] 
Net Income (Loss) Per Common Share
7. Net Income (Loss) Per Common Share
A reconciliation of the numerator and denominator used in the calculation of basic and diluted net income (loss) per common share is as follows:
                                 
    For the Three Months Ended     For the Nine Months Ended  
    September 30,     September 30,  
    2011     2010     2011     2010  
    (Unaudited)  
Numerator:
                               
Net income (loss)
  $ 963     $ (612 )   $ 2,706     $ (2,506 )
 
                       
Denominator:
                               
Basic:
                               
Weighted average shares of common stock outstanding
    38,510,512       43,209,433       38,260,943       42,877,631  
 
                       
Diluted:
                               
Weighted average shares of common stock outstanding
    38,510,512       43,209,433       38,260,943       42,877,631  
Effect of potentially dilutive shares(1)
    1,497,772             2,316,833        
 
                       
Total weighted average shares of common stock outstanding
    40,008,284       43,209,433       40,577,776       42,877,631  
 
                       
Net Income (Loss) Per Common Share:
                               
Basic net income (loss) per common share
  $ 0.03     $ (0.01 )   $ 0.07     $ (0.06 )
 
                       
Net Income (Loss) Per Common Share:
                               
Diluted net income (loss) per common share
  $ 0.02     $ (0.01 )   $ 0.07     $ (0.06 )
 
                       
 
     
(1)   In calculating diluted earnings per share, all shares related to outstanding stock options, unvested restricted stock awards and warrants were excluded for the three and nine months ended September 30, 2010 because they were anti-dilutive due to the Company’s loss position for those periods. Additionally, outstanding stock options and unvested restricted stock awards having an exercise price in excess of the average market value of the Company’s common stock during the respective period were excluded for the three and nine months ended September 30, 2011 because they were anti-dilutive.