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Earnings Per Share
 3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share

(5) Earnings Per Share

The following table details the reconciliation of basic earnings per share to diluted earnings per share:

 

     Three Months ended  
     March 31,  
     2014      2013  

Numerator for basic and diluted earnings per share:

      

Net income

    $ 11,883       $ 8,493   
  

 

 

     

 

 

  

Denominator:

      

Weighted-average basic common shares outstanding

      32,916         31,403   

Assumed conversion of dilutive securities:

      

Stock options

      2,584         2,545   
  

 

 

     

 

 

  

Denominator for diluted earnings per share—Adjusted weighted-average shares

      35,500         33,948   
  

 

 

     

 

 

  

Earnings per common share:

      

Basic

    $ 0.36       $ 0.27   
  

 

 

     

 

 

  

Diluted

    $ 0.33       $ 0.25   
  

 

 

     

 

 

  

For the three months ended March 31, 2014 and March 31, 2013, stock options representing the right to purchase common stock of approximately 302,000 shares and 950,000 shares, respectively, were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect.