Note 1 - Organization, Nature of Business, Going Concern and Management's Plans (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2016	Jun. 30, 2015	Sep. 25, 2014	Jan. 26, 2009
Construction Loan											$ 7,750,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	$ (1,549,823)	$ (507,259)	$ (2,798,680)	$ (1,713,826)	$ (4,553,000)	$ (2,659,000)
Working Capital	9,718,000		9,718,000
Stockholders' Equity Attributable to Parent, Ending Balance	(14,504,761)		(14,504,761)		(15,129,860)
Proceeds from Issuance or Sale of Equity, Total			2,150,000		$ 1,584,000	$ 897,000
Payments of Stock Issuance Costs			160,000	$ 105,400
Deferred Compensation Liability, Amount Cancelled							$ 2,404,000
Minimum [Member]
Capital Required for Capital Adequacy	2,500,000		2,500,000
Maximum [Member]
Capital Required for Capital Adequacy	50,000,000		50,000,000
PA-1 [Member]
Debt Instrument, Debt Default, Amount	$ 8,137,117		8,137,117							$ 8,137,117
Property, Plant and Equipment of PA1 [Member]
Impairment of Long-Lived Assets Held-for-use			$ 0					$ 1,684,562	$ 3,750,000