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Property and Equipment (Tables)
12 Months Ended
Jul. 31, 2012
Property and Equipment [Abstract]  
Property and equipment
                 
    2012     2011  

Leasehold improvements

  $ 65     $ 65  

Equipment

    663       816  

Furniture and fixtures

    151       151  
   

 

 

   

 

 

 

Total

    879       1,032  

Less: accumulated depreciation

    (527     (809
   

 

 

   

 

 

 

Property and equipment, net

  $ 352     $ 223