Stock Based Compensation (Schedule of Changes in Non-Vested Stock Options) (Details)	6 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Shares Subject to Option
Non-vested at July 1, 2020 | shares	97,192
Granted | shares	62,025
Vested | shares	(44,667)
Forfeited or expired | shares	(4,400)
Non-vested at December 31, 2020 | shares	110,150
Weighted Average Grant Date Fair Value (per Option)
Non-vested at July 1, 2020 | $ / shares	$ 4.034
Granted | $ / shares	1.590
Vested | $ / shares	5.140
Forfeited or expired | $ / shares	3.797
Non-vested at December 31, 2020 | $ / shares	$ 2.219