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Commitments And Contingencies (Tables)
12 Months Ended
Jul. 31, 2011
Commitments And Contingencies  
Future Minimum Lease Payments

2012

   $ 27,627   

2013

     25,558   

2014

     24,355   

2015

     23,625   

2016

     21,747   

Thereafter

     169,518   

Total

   $     292,430