Note 8 - Subscription Receivable - Affiliates (Details Textual)	12 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	0.60
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1.50
Warrants with Extended Expiration Dates [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	4,497,924
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75
Chief Executive Officer [Member] | Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	5,565,000
Chief Executive Officer [Member] | Warrants Issused, Subscription Receivable [Member] | Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.60
Chief Executive Officer [Member] | Warrants Issused, Subscription Receivable [Member] | Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1
Chief Executive Officer [Member] | Secured Promissory Note [Member]
Financing Receivable, Principal Amount | $	$ 428,250
Financing Receivable, after Allowance for Credit Loss, Total | $	$ 483,387
Financing Receivable, Interest Rate, Stated Percentage	4.00%
President [Member] | Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	300,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.60
Class of Warrant or Right, Exercise Bonus, Percentage	75.00%
President [Member] | Secured Promissory Note [Member]
Financing Receivable, Principal Amount | $	$ 30,000
Financing Receivable, after Allowance for Credit Loss, Total | $	$ 33,491
Financing Receivable, Interest Rate, Stated Percentage	4.00%
Financing Receivable, Collateral | $	$ 30,000
Former Employee [Member] | Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares	928,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75
Class of Warrant or Right, Exercise Bonus, Percentage	90.00%
Former Employee [Member] | Secured Promissory Note [Member]
Financing Receivable, Principal Amount | $	$ 46,400
Financing Receivable, after Allowance for Credit Loss, Total | $	$ 53,158
Financing Receivable, Interest Rate, Stated Percentage	4.00%