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Earnings Per Common Share (Tables)
6 Months Ended
Jun. 30, 2011
Earnings Per Common Share  
Schedule Of Earnings Per Share Basic And Diluted
    Three Months
Ended June 30,
    Six Months Ended
June 30,
 
        2011             2010             2011             2010      

Numerator—basic and diluted

       

Net income

  $ 16,912      $ 25,066      $ 38,710      $ 39,251   
 

 

 

   

 

 

   

 

 

   

 

 

 

Denominator

       

Weighted average number of common shares outstanding—basic

    40,587        45,857        42,223        45,828   

Effect of dilutive stock options

    857        954        831        954   

Effect of dilutive convertible notes

    836        1,184        759        1,167   

Effect of dilutive restricted shares

    238        181        257        204   
 

 

 

   

 

 

   

 

 

   

 

 

 

Weighted average number of common shares outstanding—diluted

    42,518        48,176        44,070        48,153   
 

 

 

   

 

 

   

 

 

   

 

 

 

Earnings per common share—basic

  $ 0.42      $ 0.55      $ 0.92      $ 0.86   
 

 

 

   

 

 

   

 

 

   

 

 

 

Earnings per common share—diluted

  $ 0.40      $ 0.52      $ 0.88      $ 0.82   
 

 

 

   

 

 

   

 

 

   

 

 

 

Antidilutive stock options and restricted shares

    2,345        1,653        2,190        1,478