Note 9 - Stockholders' Equity (Details) - Stock Options Activity - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Stock Options Activity [Abstract]
Options Outstanding	4,413,870	4,258,870	5,261,145
Options Outstanding, Weighted-Average Exercise Price	$ 1.88	$ 2.81	$ 2.84
Options Outstanding, Weighted-Average Remaining Contractual Life	4 years 109 days	3 years 73 days	4 years
Options Outstanding, Aggregate Intrinsic Aggregate	$ 398,250
Exercisable at June 30, 2015	4,313,870
Exercisable at June 30, 2015	$ 1.91
Exercisable at June 30, 2015	4 years 73 days
Exercisable at June 30, 2015	$ 344,250
Granted	957,500	97,725
Granted, Weighted-Average Exercise Price	$ 0.74	$ 1.35
Exercised		0
Exercised, Weighted-Average Exercise Price		$ 0
Forfeited		(200,000)
Forfeited, Weighted-Average Exercise Price		$ 3.00
Expired	(802,500)	(900,000)
Expired, Weighted-Average Exercise Price	$ 2.7	$ 2.84