XML 29 R11.htm IDEA: XBRL DOCUMENT v2.3.0.15
Inventories
6 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories
5. Inventories

Inventories are stated at the lower of cost (first-in, first-out method) or market (net realizable value).  Inventories consist of the following:

   
September 30, 2011
  
March 31, 2011
 
        
Raw materials
 $138,000  $233,000 
Work-in-process
  38,000   9,000 
Finished goods
  563,000   436,000 
          
   $739,000  $678,000