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Inventory
6 Months Ended
Jul. 31, 2011
Inventory [Abstract]  
Inventory
8. Inventory
          Inventory, net of reserves, consists of the following (in thousands):
                 
    July 31,     January 31,  
    2011     2011  
Raw materials
  $ 1,145     $ 875  
Finished goods
    592       646  
 
           
 
  $ 1,737     $ 1,521  
 
           
          As of July 31, 2011, approximately $313,000 of total inventory was located at our corporate headquarters. The remaining balance is located at various contract manufacturer locations primarily in China.