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STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Jul. 31, 2012
Summary of Stock Option Activity

A summary of stock option activity for the three months ended July 31, 2012 is as follows:

 

     Stock Options     Weighted
Average
Exercise
Price
 

Outstanding, April 30, 2012

     1,661      $ 10.55   

Granted

     —        $ —     

Exercised

     —        $ —     

Forfeited

     (134   $ 9.52   
  

 

 

   

Outstanding, July 31, 2012

     1,527      $ 10.65   
  

 

 

   

Exercisable, July 31, 2012

     1,436      $ 11.07   
  

 

 

   
Summary of Restricted Stock, Restricted Stock Unit and Performance Stock Unit Activity

A summary of restricted stock, restricted stock unit and performance stock unit activity for the three months ended July 31, 2012 is as follows:

 

     Restricted Stock /
Restricted Stock
Units
    Weighted
Average
Grant
Price
     Performance
Stock
Units (1)
    Weighted
Average
Grant
Price
 

Outstanding, April 30, 2012

     784      $ 4.47         596      $ 4.96   

Granted

     330      $ 5.16         316      $ 5.17   

Class A Common Stock Vested

     (346   $ 3.83         —        $ —     

Forfeited

     (10   $ 4.22         (10   $ 4.91   
  

 

 

      

 

 

   

Outstanding, July 31, 2012

     758      $ 5.06         902      $ 5.03   
  

 

 

      

 

 

   

 

(1) Performance stock units are included at the 100% attainment level. Attainment of maximum annual returns on net assets could result in the issuance of an additional 522 shares of Class A Common Stock.
Schedule of Fair Values of Stock Options Related to Shares Issued Under Employee Stock Purchase Plan

The fair value of shares to be purchased under our Employee Stock Purchase Plan were estimated assuming no expected dividend yield using the following weighted average assumptions for the three months ended July 31, 2012 and 2011:

 

     Three Months Ended July 31,  
     2012     2011  

Employee Stock Purchase Plan:

    

Expected life

     0.5 years        0.5 years   

Risk-free interest rate

     0.15     0.10

Expected volatility

     38.15     47.79