Note 4 - Leases (Details Textual) - USD ($)	9 Months Ended
	Dec. 31, 2019	Apr. 01, 2019	Mar. 31, 2019
Operating Lease, Right-of-Use Asset	$ 144,146
Operating Lease, Liability, Total	$ 161,136
Lessee, Operating Lease, Discount Rate	17.00%
Finance Lease Costs	$ 790,666
Finance Lease, Interest Expense	474,686
Finance Lease, Right-of-Use Asset, Amortization	315,980
Operating Lease, Cost	61,144
Operating Lease, Interest Expense	22,667
Operating Lease, Right-of-Use Asset Amortization	38,477
Discontinued Operations [Member]
Operating Lease, Right-of-Use Asset
Finance Lease Costs	280,227
Finance Lease, Interest Expense	153,977
Finance Lease, Right-of-Use Asset, Amortization	$ 126,250
Minimum [Member]
Lessee, Finance Lease, Discount Rate	10.20%
Maximum [Member]
Lessee, Finance Lease, Discount Rate	11.50%
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 182,624
Operating Lease, Liability, Total		$ 190,173