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Net Income per Common Share
 3 Months Ended
Apr. 30, 2013
Net Income per Common Share

8. Net Income per Common Share

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

 

     Three Months Ended April 30,  
     2013      2012  

Basic weighted-average common shares outstanding

      146,289,751         144,709,199   

Effect of dilutive options, stock appreciation rights, performance stock units and restricted stock units

      2,509,305         859,468   
  

 

 

     

 

 

  

Diluted weighted-average common shares outstanding

      148,799,056         145,568,667   
  

 

 

     

 

 

  

For the three months ended April 30, 2013, there were no anti-dilutive awards to purchase common shares that were excluded from the calculation of diluted net income per common share. For the three months ended April 30, 2012, options to purchase 4,175,650 common shares with an exercise price range of $29.46 to $39.58 were excluded from the calculation of diluted net income per common share because their effect would have been anti-dilutive.

Excluded from the calculation of diluted net income per common share as of April 30, 2013 and April 30, 2012, were 367,100 and 2,797,740 performance based equity awards, respectively, since they did not meet the required performance criteria.