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Stock-Based Compensation (Tables)
6 Months Ended
Jul. 31, 2011
Stock-Based Compensation  
Schedule Of Stock Options Activity
     Shares  

Outstanding at January 31, 2011

     2,881,356   

Granted

     12,882   

Exercised

     (1,033,118

Canceled

     (17,774
  

 

 

 

Outstanding at July 31, 2011

     1,843,346   
  

 

 

 
Schedule Of Restricted Stock Activity
     Shares  

Outstanding at January 31, 2011

     543,841   

Granted

     263,614   

Vested

     (203,024

Canceled

     (23,300
  

 

 

 

Outstanding at July 31, 2011

     581,131