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Inventories
12 Months Ended
Jan. 31, 2012
Inventories [Abstract]  
Inventories

5. Inventories

Inventories consisted of the following (in thousands):

 

                 
    As of January 31,  
    2012     2011  

Raw materials

  $ 2,789     $ 2,440  

Finished goods

    3,711       1,888  

Work in progress

    1,109       1,215  
   

 

 

   

 

 

 

Cost of inventories

    7,609       5,543  

Less allowance for obsolescence

    (901     (730
   

 

 

   

 

 

 

Net inventories

  $ 6,708     $ 4,813