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Inventories
9 Months Ended
Apr. 30, 2012
Inventories [Abstract]  
Inventories
5. Inventories

Inventories consist of the following (in thousands):

 

                 
    April 30,
2012
    July 31,
2011
 

Raw materials and purchased components

  $ 1,272     $ 1,612  

Finished goods

    5,706       6,088  
   

 

 

   

 

 

 

Total

    6,978       7,700  

Obsolescence reserve

    (2,134     (2,184
   

 

 

   

 

 

 

Inventories

  $ 4,844     $ 5,516