Note 9 - Allocation of Recognized Period Costs (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
General and Administrative Expense [Member] | Stock Bonus [Member]
Allocated Share-based Compensation Expense	$ 69,000
General and Administrative Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	66,092	378,937
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost	42,550	369,283
General and Administrative Expense [Member] | Modification of Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost		223,917
General and Administrative Expense [Member]
Allocated Share-based Compensation Expense	177,642	972,137
Research and Development Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	33,461	122,672
Research and Development Expense [Member]
Allocated Share-based Compensation Expense	33,461	122,672
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 99,553	$ 501,609