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Note 3 - Accounts Receivable, net (Tables)
 6 Months Ended
Sep. 30, 2014
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] The following table sets forth the components of accounts receivable:

   
September 30,
2014
   
March 31,
2014
 
Government
 
$
422,255
   
$
1,982,215
 
Commercial
   
147,651
     
140,707
 
Less: Allowance for doubtful accounts
   
(27,282
)
   
(27,282
)
   
$
542,624
   
$
2,095,640