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Stock-Based Compensation (Tables)
12 Months Ended
Jul. 31, 2015
Stock-Based Compensation [Abstract]  
Schedule of risk free rate based on U.S. Treasury yield curve effect at time of grant

    
Year ended July 31 2015 
ASSUMPTIONS   
Average risk-free interest rate  1.63%
Expected dividend yield   
Expected volatility  51.4%
Expected term  6.0 years 

 

Summary of stock option activity

             
  Number of
Options
(in thousands)
  Weighted-
Average
Exercise
Price
  Weighted-
Average
Remaining
Contractual
Term (in years)
  Aggregate
Intrinsic Value
(in thousands)
 
Outstanding at July 31, 2014  611  $14.24         
Granted  135   15.97         
Exercised  (245)  13.98         
Cancelled / Forfeited  (77)  16.22         
OUTSTANDING AT JULY 31, 2015  424  $14.58   7.4  $1,167 
EXERCISABLE AT JULY 31, 2015  147  $17.02   4.1  $132 

 

Summary of grants of restricted shares of class B common stock

       
(in thousands) Number of
Non-vested
Shares
  Weighted-
Average
Grant-
Date Fair
Value
 
Non-vested shares at July 31, 2014  540  $13.00 
Granted  366   17.36 
Vested  (454)  12.34 
Forfeited  (32)  13.04 
NON-VESTED SHARES AT JULY 31, 2015  420  $17.50