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Inventories
6 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories
6. Inventories

Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the first-in, first-out (FIFO) method. Inventories consist of the following (in thousands):

 

     September 30,
2011
     March 31,
2011
 

Raw materials

   $ 4,995       $ 4,548   

Work in process

     480         27   

Finished goods

     3,488         4,350   
  

 

 

    

 

 

 
   $ 8,963       $ 8,925