Note 8 - Income Taxes - Reconciliation Schedule of Federal Income Tax Benefits (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Expected income tax benefit at statutory rate	$ (836,000)	$ (1,537,000)
State taxes, net of federal benefit	(75,000)	(138,000)
Permanent differences and other	3,000	(13,000)
Change in valuation allowance	908,000	1,688,000
Income tax benefit