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Net Income Per Common Share
 9 Months Ended
Oct. 31, 2011
Net Income Per Common Share [Abstract]  
Net Income Per Common Share

9. Net Income per Common Share

The following is a reconciliation of the weighted average shares outstanding used for the computation of basic and diluted net income per common share:

 

    Three Months Ended October 31,     Nine Months Ended
October 31,		  
            2011                     2010             2011     2010  

Basic weighted average shares outstanding

     151,170,175        165,699,540        157,313,818        167,808,729   

Effect of dilutive options, restricted stock and performance shares

     2,264,636        2,876,097        2,437,675        3,420,154   
 

 

 

    

 

 

    

 

 

    

 

 

  

Diluted weighted average shares outstanding

     153,434,811        168,575,637        159,751,493        171,228,883   
 

 

 

    

 

 

    

 

 

    

 

 

  

For the three months ended October 31, 2011 and 2010, options to purchase 4,688,250 common shares with an exercise price range of $27.45 to $39.58 and options to purchase 1,917,100 common shares with an exercise price range of $32.89 to $39.58, respectively, were outstanding but were not included in the Company's computation of diluted weighted average common shares and common share equivalents outstanding because their effect would have been anti-dilutive. Furthermore, options to purchase 3,490,017 and 1,366,633 common shares were outstanding for the nine months ended October 31, 2011 and 2010, respectively, but were not included in the Company's computation of diluted weighted average common shares and common share equivalents outstanding, because their effect would have been anti-dilutive. The price of the options ranged from $27.45 to $39.58 and $32.89 to $39.58 for the nine months ended October 31, 2011 and 2010, respectively.