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Note 11. Quarterly Financial Data (Unaudited)
12 Months Ended
Mar. 31, 2012
Quarterly Financial Information [Text Block]
Note 11. Quarterly Financial Data (Unaudited)

   
Fiscal Year Ended March 31, 2012
 
   
First
   
Second
   
Third
   
Fourth
       
   
Quarter
   
Quarter
   
Quarter
   
Quarter
   
Total
 
Net sales
  $ 3,756     $ 4,025     $ 4,314     $ 4,591     $ 16,686  
Gross profit
  $ 1,128     $ 1,397     $ 1,357     $ 1,203     $ 5,085  
Net loss
  $ (2,630 )   $ (2,953 )   $ (2,342 )   $ (3,091 )   $ (11,016 )
Net loss per common share - basic and diluted
  $ (0.06 )   $ (0.07 )   $ (0.05 )   $ (0.07 )   $ (0.25 )

   
Fiscal Year Ended March 31, 2011
 
   
First
   
Second
   
Third
   
Fourth
         
   
Quarter
   
Quarter
   
Quarter
   
Quarter
   
Total
 
Net sales
  $ 2,632     $ 2,325     $ 2,715     $ 3,227     $ 10,899  
Gross profit
  $ 689     $ 641     $ 809     $ 781     $ 2,920  
Net loss
  $ (2,469 )   $ (3,014 )   $ (2,576 )   $ (3,784 )   $ (11,843 )
Net loss per common share - basic and diluted
  $ (0.07 )   $ (0.08 )   $ (0.07 )   $ (0.09 )   $ (0.31 )