Note 10 - Equity Compensation - Summary of Unvested Stock Options (Details) - $ / shares	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Unvested (in shares)	1,663,505
Unvested (in dollars per share)	$ 3.39
Granted (in shares)	834,320	1,016,800
Granted (in dollars per share)	$ 3.83	$ 3.63
Vested (in shares)	(546,978)
Vested (in dollars per share)	$ 3.25
Forfeited (in shares)	(25,500)
Forfeited (in dollars per share)	$ 3.50
Unvested (in shares)	1,925,347
Unvested (in dollars per share)	$ 3.62