Note 9 - Equity Compensation (Details) - Stock Options (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Stock Options [Abstract]
Outstanding - Shares	2,677,464	2,341,150	2,006,250	2,123,939
Outstanding - Weighted Average Exercise Price	$ 9.57	$ 9.95	$ 10.64	$ 10.80
Outstanding - Weighted Average Remaining Contractual Term	5 years 146 days	5 years 219 days	5 years 292 days	6 years 109 days
Outstanding - Aggregate Intrinsic Value	$ 1,674,010	$ 1,544,896	$ 654,747	$ 955,401
Exercisable - Shares	1,874,326	1,643,050	1,404,400
Exercisable - Weighted Average Exercise Price	$ 10.74	$ 11.34	$ 12.11
Exercisable - Weighted Average Remaining Contractual Term	4 years	4 years 219 days	5 years 36 days
Exercisable - Aggregate Instrinsic Value	$ 750,925	$ 524,522	$ 234,971
Granted - Shares	436,000	414,750	36,000
Granted - Weighted Average Exercise Price	$ 7.24	$ 6.58	$ 7.13
Forfeitures - Shares	(39,050)	(44,350)	(150,939)
Forfeitures - Weighted Average Exercise Price	$ 11.59	$ 13.61	$ 12.12
Exercised - Shares	(60,636)	(35,500)	(2,750)
Exercised - Weighted Average Exercise Price	$ 6.22	$ 4.93	$ 5.18