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Earnings Per Common Share (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Earnings Per Share Basic and Diluted
     Three Months Ended
March 31,
 
     2013      2012  

Numerator—basic and diluted

     

Net income

   $ 23,680       $ 18,431   
  

 

 

    

 

 

 

Denominator

     

Weighted average number of common shares outstanding—basic

     39,403         40,358   

Effect of dilutive stock options

     595         963   

Effect of dilutive convertible notes

     —           1,159   

Effect of dilutive restricted shares

     622         705   
  

 

 

    

 

 

 

Weighted average number of common shares outstanding—diluted

     40,620         43,185   
  

 

 

    

 

 

 

Earnings per common share—basic

   $ 0.60       $ 0.46   
  

 

 

    

 

 

 

Earnings per common share—diluted

   $ 0.58       $ 0.43   
  

 

 

    

 

 

 

Antidilutive stock options and restricted shares

     3,486         2,081