Note 14 - Subsequent Events (Details Textual) - USD ($)		3 Months Ended	12 Months Ended
	Sep. 23, 2021	Sep. 27, 2021	Jun. 30, 2021	Jun. 30, 2020
Class of Warrant or Right, Exercised During Period (in shares)			4,065,988
Common Stock Shares Issued upon Exercise of Warrants (in shares)			4,065,988
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.75
Proceeds from Warrant Exercises			$ 3,049,490
President [Member]
Accounts Payable, Converted to Units, Amount			$ 52,361	$ 52,830
Deferred Compensation and Accounts Payable Converted to Units, Shares (in shares)			360,805	143,316
Shares Issued, Price Per Share (in dollars per share)			$ 0.50
Number of Shares Per Unit (in shares)				1
Number of Warrants Per Unit (in shares)			1	1
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)				1
President [Member] | Restricted Stock [Member]
Number of Shares Per Unit (in shares)			1
Subsequent Event [Member] | Land Lease Near Fair Oaks, Indiana [Member]
Initial Rent Payment Due	$ 60,000
Monthly Rent	$ 7,250
Subsequent Event [Member] | President [Member]
Accounts Payable, Converted to Units, Amount		$ 5,126
Deferred Compensation and Accounts Payable Converted to Units, Shares (in shares)		10,253
Shares Issued, Price Per Share (in dollars per share)		$ 0.50
Number of Warrants Per Unit (in shares)		1
Subsequent Event [Member] | President [Member] | Restricted Stock [Member]
Number of Shares Per Unit (in shares)		1
Warrants Exercised for Restricted Stock [Member] | Subsequent Event [Member]
Class of Warrant or Right, Exercised During Period (in shares)		139,334
Common Stock Shares Issued upon Exercise of Warrants (in shares)		139,334
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.75
Proceeds from Warrant Exercises		$ 104,500
Warrants Issued as Commissions [Member] | Subsequent Event [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.75
Class of Warrant or Right, Issued During Period (in shares)		10,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		10,000
Warrants Related to the Conversion of Deferred Compensation and Accounts Payable into Units [Member] | President [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)			$ 0.75	$ 0.75
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)			1
Warrants Related to the Conversion of Deferred Compensation and Accounts Payable into Units [Member] | Subsequent Event [Member] | President [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 0.75
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)		1