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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2012
Computation of Basic and Diluted Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share, for the periods indicated:
 
                         
(In thousands, except per share amounts)
 
Three Months Ended
   
Six Months Ended
       
   
June 30, 2012
   
June 30, 2011
   
June 30, 2012
   
June 30, 2011
 
Numerator:
                       
     Income (loss)
  $ 6,455     $ 13,432     $ 4,754     $ 24,497  
Denominator:
                               
     Denominator for basic earnings per share -
                               
          Weighted-average shares
    16,309       15,945       16,271       15,919  
     Effect of dilutive stock options
    555       733       572       685  
     Denominator for diluted earnings per share - Adjusted
                               
          weighted-average shares and assumed conversions
    16,864       16,678       16,843       16,604  
                                 
Basic income (loss) per share:
  $ 0.40     $ 0.84     $ 0.29     $ 1.54  
Diluted income (loss) per share:
    0.38       0.81       0.28       1.48  
                                 
Anti-dilutive shares and Potential Ordinary Shares That Were Not Otherwise Antidilutive excluded From Calculation of Diluted Weighted Average Shares Outstanding
   
Three Months Ended
 
   
June 30, 2012
   
June 30, 2011
 
Anti-dilutive shares excluded
    932,104       722,903