Note 4 - Accounts Receivable, net (Tables)

6 Months Ended

Sep. 30, 2017

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, 2017			March 31, 2017
Government	$	660,135		$	1,392,482
Commercial		414,642			171,400
Less: Allowance for doubtful accounts		(7,500	)		(7,500	)
	$	1,067,277		$	1,556,382