Note 4 - Stockholders' Deficit - Summary of Stock Purchase Warrants Outstanding (Details)	9 Months Ended
	Mar. 31, 2018 $ / shares shares
Beginning Balance, Number of Warrants (in shares) | shares	4,044,465
Granted, Number of Warrants (in shares) | shares	4,000,000
Exercise Price, Warrant, Granted (in dollars per share)	$ 0.05
Expired, Number of Warrants (in shares) | shares	(4,044,465)
Ending Balance, Number of Warrants (in shares) | shares	4,000,000
Exercise Price, Warrant, Ending Balance (in dollars per share)	$ 0.05
Minimum [Member]
Exercise Price, Warrant, Beginning Balance (in dollars per share)	0.20
Exercise Price, Warrant, Expired (in dollars per share)	0.20
Maximum [Member]
Exercise Price, Warrant, Beginning Balance (in dollars per share)	0.30
Exercise Price, Warrant, Expired (in dollars per share)	0.30
Weighted Average [Member]
Exercise Price, Warrant, Beginning Balance (in dollars per share)	0.28
Exercise Price, Warrant, Expired (in dollars per share)	0.28
Exercise Price, Warrant, Ending Balance (in dollars per share)	$ 0.05