Stock Based Compensation (Schedule of Stock Option Activity) (Details)	9 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares	Jun. 30, 2016 $ / shares shares
Number of Shares Subject To Options
Balance at July 1, 2016 | shares	170,450
Granted | shares	41,150
Exercised | shares	(8,300)
Forfeited or expired | shares	(3,650)
Outstanding at March 31, 2017 | shares	199,650	170,450
Vested or expected to vest at March 31, 2017 | shares	188,853
Exercisable at March 31, 2017 | shares	124,950
Weighted Average Exercise Price
Balance at July 1, 2016 | $ / shares	$ 23.84
Granted | $ / shares	26.25
Exercised | $ / shares	18.18
Forfeited or expired | $ / shares	23.12
Outstanding at March 31, 2017 | $ / shares	24.59	$ 23.84
Vested or expected to vest at March 31, 2017 | $ / shares	24.50
Exercisable at March 31, 2017 | $ / shares	$ 23.66
Weighted Average Remaining Contractual Term
Outstanding	6 years 1 month 17 days	5 years 8 months 23 days
Granted	9 years 8 months 5 days
Vested or expected to vest at March 31, 2017	5 years 11 months 16 days
Exercisable at March 31, 2017	4 years 4 months 21 days
Aggregate Intrinsic Value
Outstanding at March 31, 2017 | $	$ 151,064
Vested or expected to vest at March 31, 2017 | $	151,064
Exercisable at March 31, 2017 | $	$ 151,064