Note 10 - Summary of Unvested Stock Options (Details) - $ / shares	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Non-vested at (in shares)	1,080,198
Non-vested at (in dollars per share)	$ 2.99
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	1,026,800	713,323
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 3.64	$ 3.26
Vested (in shares)	(390,443)
Vested (in dollars per share)	$ 2.94
Forfeited (in shares)	(35,800)
Forfeited (in dollars per share)	$ 3.31
Non-vested at (in shares)	1,680,755
Non-vested at (in dollars per share)	$ 3.39