Stock Based Compensation (Schedule of Changes in Non-Vested Stock Options) (Details)	9 Months Ended
	Mar. 31, 2018 $ / shares shares
Number of Shares Subject to Option
Non-vested at July 1, 2017 | shares	42,900
Granted | shares	51,715
Vested | shares	(1,500)
Forfeited or expired | shares	(3,835)
Non-vested at March 31, 2018 | shares	89,280
Weighted Average Grant Date Fair Value (per Option)
Non-vested at July 1, 2017 | $ / shares	$ 4.586
Granted | $ / shares	2.793
Vested | $ / shares	4.149
Forfeited or expired | $ / shares	3.731
Non-vested at March 31, 2018 | $ / shares	$ 3.591