Note 4 - Accounts Receivable, net (Details) - Schedule of Accounts, Notes, Loans and Financing Receivable - USD ($)	Dec. 31, 2018	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for doubtful accounts	$ (7,500)	$ (7,500)
Accounts Receivable, net	2,271,510	1,095,049
Government Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	2,208,470	998,522
Commercial Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable	$ 70,540	$ 104,027