Stock-based Compensation (Details1) (USD $)	9 Months Ended
	Mar. 31, 2013
Balance, beginning	187,050
Granted
Exercised	(23,400)
Forfeited or expired	(500)
Outstanding, ending	163,150
Vested or expected to vest, end of period	155,295
Exercisable, end of period	105,200
Weight Average Exercise Price
Balance, beginning	$ 20.69
Granted
Exercised	$ 17.85
Forfeited or expired	$ 25.14
Outstanding, ending	$ 21.08
Vested or expected to vest, end of period	$ 20.87
Exercisable, end of period	$ 18.84
Weighted Average Remaining Contractual Term
Balance, beginning	6 years 11 months 16 days
Outstanding, ending	6 years 5 months 26 days
Vested or expected to vest, end of period	6 years 4 months 13 days
Exercisable, end of period	5 years 2 months 19 days
Aggregate Intrinsic Value
Outstanding end of period	$ 788,211
Vested or expected to vest, end of period	782,167
Exercisable, end of period	$ 743,619