Note 10 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	9 Months Ended
	May 08, 2019	Mar. 31, 2019
Stock Issued During Period, Value, Issued for Services		$ 45,256
Sale of Units, Value		$ 792,365
Subsequent Event [Member]
Sale of Units, Number Of Units Issued	75,000
Shares Issued, Price Per Share	$ 0.50
Sale of Units, Value	$ 37,500
Number of Shares Per Unit	1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.75
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right	0.5
Subsequent Event [Member] | An Employee [Member]
Stock Issued During Period, Shares, Issued for Services	2,734
Stock Issued During Period, Value, Issued for Services	$ 2,000
Subsequent Event [Member] | Consultant [Member]
Stock Issued During Period, Shares, Issued for Services	20,000
Stock Issued During Period, Value, Issued for Services	$ 15,000