Note 7 - Income Taxes (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Note 7 - Income Taxes (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 27,500,000	$ 23,600,000	$ 13,200,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	20,900,000	16,300,000	10,200,000
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	1,900,000	2,000,000	1,800,000
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 27,000
Latest Tax Year [Member] | Domestic Tax Authority [Member]
Note 7 - Income Taxes (Details) [Line Items]
Open Tax Year	2010
Earliest Tax Year [Member] | State and Local Jurisdiction [Member]
Note 7 - Income Taxes (Details) [Line Items]
Open Tax Year		2009