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Note 3 - Accounts Receivable, net (Tables)
 9 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] The following table sets forth the components of accounts receivable:

   
December 31,
2014
   
March 31,
2014
 
Government
 
$
519,018
   
$
1,982,215
 
Commercial
   
122,503
     
140,707
 
Less: Allowance for doubtful accounts
   
(27,282
)
   
(27,282
)
   
$
614,239
   
$
2,095,640