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Common And Common Equivalent Shares (Tables)
6 Months Ended
Jun. 30, 2012
Schedule Of Calculation Of Shares Used In The Basic And Diluted Net Income Per Share
     Three Months Ended
June  30,
     Six Months Ended
June 30,
 
     2012      2011      2012      2011  

Weighted average number of common shares outstanding

     48,543         47,531         48,408         47,341   

Weighted average number of dilutive common share equivalents

     1,002         1,199         1,066         1,206   
  

 

 

    

 

 

    

 

 

    

 

 

 

Weighted average number of common and common equivalent shares outstanding

     49,545         48,730         49,474         48,547   
  

 

 

    

 

 

    

 

 

    

 

 

 

Antidilutive securities not included in the dilutive earnings per share calculation

     40         63         34         50