Note 8 - Stockholders' Equity (Details) - Allocation of Recognized Period Costs (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
General and Administrative Expense [Member] | Individual Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense		$ 24,999		$ 94,998
General and Administrative Expense [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense	4,000	(155,728)	4,000	(87,517)
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense	15,783	(130,729)	15,783	315,119
Change in fair value from modification of option terms	11,783		11,783	307,638
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense		(153,587)		(135,939)
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense	$ 4,000	$ (309,315)	$ 4,000	$ (223,457)