Note 11 - Related Party Transactions (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Stock Issued During Period, Value, Issued for Services			$ 16,350	$ 45,256
Coalition for Affordable Bay Solutions [Member]
Related Party Transaction, Reimbursements	$ 0	$ 0	0	30,000
Payments for Consulting Expenses	$ 12,720	$ 12,500	$ 52,540	$ 12,500
Stock Issued During Period, Shares, Issued for Services (in shares)				16,000
Stock Issued During Period, Value, Issued for Services				$ 8,000