Note 2 - Liquidity and Going Concern (Details) - USD ($)	1 Months Ended
	Oct. 31, 2017	Mar. 31, 2017	Jun. 30, 2019	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Estimated Litigation Liability			$ 5,400,000
Loss Contingency, Damages Awarded, Value	$ 2,100,000	$ 2,800,000
Restricted Cash, Current			$ 2,005,523	$ 2,004,871