Stock Based Compensation (Schedule of Changes in Non-Vested Stock Options) (Details)	3 Months Ended
	Sep. 30, 2017 $ / shares shares
Weighted Number of Shares Subject to Option
Non-vested at July 1, 2017 | shares	42,900
Granted | shares
Vested | shares
Forfeited or expired | shares	(350)
Non-vested at September 30, 2017 | shares	42,550
Average Grant Date Fair Value
Non-vested at July 1, 2017 | $ / shares	$ 4.586
Granted | $ / shares
Vested | $ / shares
Forfeited or expired | $ / shares	4.640
Non-vested at September 30, 2017 | $ / shares	$ 4.585