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Earnings Per Share
6 Months Ended
Jun. 30, 2011
Earnings Per Share [Abstract]  
Earnings Per Share
10. Earnings Per Share
     Basic’s basic earnings per common share are determined by dividing net earnings applicable to common stock by the weighted average number of common shares actually outstanding during the period. Diluted earnings per common share is based on the increased number of shares that would be outstanding assuming conversion of dilutive outstanding securities using the “as if converted” method. The following table sets forth the computation of basic and diluted earnings per share (in thousands, except share data):
                                 
    Three Months Ended June 30,     Six Months Ended June 30,  
    2011     2010     2011     2010  
    (Unaudited)     (Unaudited)  
Numerator (both basic and diluted):
                               
Net income (loss)
  $ 16,550     $ (10,672 )   $ (1,943 )   $ (32,263 )
 
                               
Denominator:
                               
Denominator for basic earnings (loss) per share
    40,356,049       39,724,030       40,135,143       39,672,891  
 
                               
Stock options
    422,110                    
Unvested restricted stock
    557,505                    
 
                       
Denominator for diluted earnings (loss) per share
    41,335,664       39,724,030       40,135,143       39,672,891  
 
                       
 
                               
Basic earnings (loss) per common share:
  $ 0.41     $ (0.27 )   $ (0.05 )   $ (0.81 )
 
                       
 
                               
Diluted earnings (loss) per common share:
  $ 0.40     $ (0.27 )   $ (0.05 )   $ (0.81 )
 
                       
     Stock options and unvested shares of restricted stock of approximately 524,000 were excluded in the computation of diluted earnings per share for the three months ended June 30, 2010, as the effect would have been anti-dilutive due to the net loss in the period. Stock options and unvested shares of restricted stock of approximately 1,222,000 and 859,000, respectively, were excluded in the computation of diluted earnings per share for the six months ended June 30, 2011 and 2010, respectively, as the effect would have been anti-dilutive due to the net loss in each of these periods.