Note 7 - Stockholders' Equity - Allocation of Recognized Period Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Employee Stock Option [Member]
Allocated Share-based Compensation Expense	$ 108,960	$ 74,320	$ 129,816	$ 89,640
Change in fair value from modification of option terms			177,471
General and Administrative Expense [Member]
Allocated Share-based Compensation Expense	262,928	173,921	279,426	175,759
General and Administrative Expense [Member] | Stock Bonus [Member]
Allocated Share-based Compensation Expense	6,830	69,000	6,830	69,000
General and Administrative Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	90,067	62,371	106,565	64,209
Change in fair value from modification of option terms	166,031	42,550	166,031	42,550
Research and Development Expense [Member]
Allocated Share-based Compensation Expense	38,283	11,949	42,645	25,431
Research and Development Expense [Member] | Stock Bonus [Member]
Allocated Share-based Compensation Expense	7,954		7,954
Research and Development Expense [Member] | Employee Stock Option [Member]
Allocated Share-based Compensation Expense	18,889	11,949	23,251	25,431
Change in fair value from modification of option terms	$ 11,440		$ 11,440