Note 6 - Option Activity For Stock Option Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015
Employee Stock Option [Member]
Outstanding at June 30, 2014 (in shares)	1,253,035
Outstanding at June 30, 2014 (in dollars per share)	$ 2.08
Granted (in shares)	2,369,250
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 1.08
Forfeited/cancelled (in shares)	(394,473)
Forfeited/cancelled (in dollars per share)	$ 1.44
Expired (in shares)	(275,750)
Expired (in dollars per share)	$ 3
Outstanding at June 30, 2015 (in shares)	1,253,035	1,253,035	2,952,062
Outstanding at June 30, 2015 (in dollars per share)	$ 1.28	$ 2.08
Outstanding at June 30, 2015	5 years 109 days
Outstanding at June 30, 2015	$ 18
Vested and Expected to Vest at June 30, 2015 (in shares)	2,454,167
Vested and Expected to Vest at June 30, 2015 (in dollars per share)	$ 1.27
Vested and Expected to Vest at June 30, 2015	5 years 36 days
Vested and Expected to Vest at June 30, 2015	$ 15
Exercisable at June 30, 2015 (in shares)	1,167,929
Exercisable at June 30, 2015 (in dollars per share)	$ 1.40
Exercisable at June 30, 2015	4 years
Exercisable at June 30, 2015	$ 5
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.62	$ 1.15