Note 8 - Stockholders' Equity (Details) - Allocation of Recognized Period Costs (USD $)	3 Months Ended
	Sep. 30, 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	$ 69,999
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	68,210
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense	445,847
Change in fair value from modification of option terms	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	17,648
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based employee compensation expense	$ 85,858