XML 47 R14.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-based Compensation
 9 Months Ended
Apr. 30, 2012
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]  
Stock-based Compensation

NOTE 8 - Stock-based Compensation

The Company recognizes compensation expense for stock option awards on a straight-line basis over the requisite service period of the award. The following is a summary of option activity for the Company's stock options for the nine months ended April 30, 2012:

 
                                               
        Shares           Weighted-
average
Exercise Price		           Weighted-average
Remaining
Contractual Term		           Aggregate
Intrinsic Value		  
        (in 000s)                                   (in 000s)  
  Outstanding at July 31, 2011     16,705         $ 15.50                          
  Grants of options     840         $ 22.93                          
  Exercises     (1,034 )       $ 12.56                          
  Forfeitures or expirations     (39 )       $ 16.67                          
                                               
  Outstanding at April 30, 2012     16,472         $ 16.07           6.75         $ 170,246  
                                               
  Exercisable at April 30, 2012     9,801         $ 15.10           6.08         $ 110,812  

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of the Company's common stock for the 16,653,594 options that were in-the-money at April 30, 2012.

The table below sets forth the stock-based compensation recognized by the Company:

 
                                                                                   
              Three months ended April 30,           Nine months ended April 30,        
              2012           2011           2012           2011        
  General and administrative         $ 4,573         $ 4,834         $ 14,216         $ 13,395        
  Yard operations           815           243           2,198           798        
            $ 5,388         $ 5,077         $ 16,414         $ 14,193