Note 11 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	3 Months Ended
	Nov. 05, 2020	Sep. 30, 2020	Sep. 30, 2019
Sale of Units, Value		$ 25,000	$ 159,957
Subsequent Event [Member] | Sale of Units, One [Member]
Deferred Compensation, Loan Payable, and Accounts Payable Converted to Units, Price Per Unit (in dollars per share)	$ 0.50
Sale of Units, Value	$ 80,000
Number of Shares Per Unit (in shares)	1
Number of Warrants Per Unit (in shares)	1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75