Stock Based Compensation (Schedule of Changes in Non-Vested Stock Options) (Details)	6 Months Ended
	Dec. 31, 2021 $ / shares shares
Number of Shares Subject to Option
Non-vested at July 1, 2021 | shares	103,450
Granted | shares	77,550
Vested | shares	(43,025)
Forfeited or expired | shares	(32,150)
Non-vested at December 31, 2021 | shares	105,825
Weighted Average Grant Date Fair Value (per Option)
Non-vested at July 1, 2021 | $ / shares	$ 2.22
Granted | $ / shares	3.72
Vested | $ / shares	3.03
Forfeited or expired | $ / shares	2.58
Non-vested at December 31, 2021 | $ / shares	$ 2.89