Note 10 - Stock Options (Details) - USD ($)	9 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014
Outstanding at (in shares)	2,677,436	2,677,464	2,677,464
Outstanding at (in dollars per share)	$ 8.85	$ 9.57	$ 9.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	6 years 292 days	6 years 109 days	6 years 36 days	5 years 146 days
Outstanding at	$ 10,448,456	$ 2,519,836	$ 4,914,601	$ 1,674,010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	1,026,800	713,323
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 9.39	$ 6.76
Forfeitures (in shares)	(150,800)	(559,525)
Forfeitures (in dollars per share)	$ 15.73	$ 10.23
Exercised (in shares)	(509,871)	(103,875)
Exercised (in dollars per share)	$ 7.33	$ 6.01
Outstanding at (in shares)	3,043,565	2,727,387	2,677,436	2,677,464
Outstanding at (in dollars per share)	$ 8.95	$ 8.84	$ 8.85	$ 9.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,362,810	1,650,439
Exercisable at (in dollars per share)	$ 9.67	$ 10.15
Exercisable at	4 years 109 days	4 years 182 days
Exercisable at	$ 4,741,694	$ 1,099,822