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Common Stock Repurchases (Tables)
 9 Months Ended
Apr. 30, 2012
Equity [Abstract]  
Schedule disclosing summary of stock options exercised

 

                                                     
  Period           Options
Exercised		   Exercise
Price		     Shares Net
Settled for
Exercise		     Shares
Withheld
for Taxes(1)		     Net
Shares to
Employee		   Share
Price for
Withholding		   Tax
Withholding
(in 000's)		  
  FY 2011-Q2     177,500   $ 8.47     76,050     37,834     63,616   $ 19.76   $ 748  
  FY 2011-Q3     548,334   $ 11.02     295,496     118,032     134,806   $ 20.40   $ 2,408  
  FY 2011-Q4     180,000   $ 9.48     76,396     48,366     55,238   $ 22.33   $ 1,080  
  FY 2012-Q1     40,000   $ 9.00     16,082     8,974     14,944   $ 22.39   $ 201  
  FY 2012-Q2     20,000   $ 9.00     7,506     4,584     7,910   $ 23.98   $ 110  
  FY 2012-Q3     322,520   $ 10.74     131,298     85,684     105,538   $ 26.38   $ 2,260  

(1)Shares withheld for taxes are treated as a repurchase of shares for accounting purposes but do not count against our stock repurchase program.