Note 10 - Equity Compensation - Summary of Unvested Stock Options (Details) - $ / shares	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Unvested (in shares)	1,663,505
Unvested (in dollars per share)	$ 3.39
Granted (in shares)	1,256,623	1,026,800
Granted (in dollars per share)	$ 3.71	$ 3.64
Vested (in shares)	(685,751)
Vested (in dollars per share)	$ 3.30
Forfeited (in shares)	(26,750)
Forfeited (in dollars per share)	$ 3.50
Unvested (in shares)	2,207,627
Unvested (in dollars per share)	$ 3.60