Stock-based Compensation (Schedule of stock option activity) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015
Number of Shares Subject to Options
Balance, beginning	187,500
Granted
Exercised	(800)
Forfeited or expired
Outstanding, ending	186,700	187,500
Vested or expected to vest, end of period	180,378
Exercisable, end of period	142,650
Weight Average Exercise Price
Balance, beginning	$ 23.38
Granted
Exercised	$ 17.36
Forfeited or expired
Outstanding, ending	$ 23.40	$ 23.38
Vested or expected to vest, end of period	23.30
Exercisable, end of period	$ 22.54
Weighted Average Remaining Contractual Term
Balance, beginning		6 years 3 months 4 days
Outstanding, ending	6 years 14 days
Vested or expected to vest, end of period	5 years 10 months 28 days
Exercisable, end of period	4 years 11 months 5 days
Aggregate Intrinsic Value
Outstanding end of period	$ 381,427
Vested or expected to vest, end of period	381,427
Exercisable, end of period	$ 381,427