Stock Based Compensation (Schedule of Changes in Non-Vested Stock Options) (Details)	3 Months Ended
	Sep. 30, 2022 $ / shares shares
Weighted Number of Shares Subject to Option
Non-vested at July 1, 2022 | shares	104,175
Granted | shares	71,200
Vested | shares
Forfeited or expired | shares	(4,000)
Non-vested at September 30, 2022 | shares	171,375
Average Grant Date Fair Value (per Option)
Non-vested at July 1, 2021 | $ / shares	$ 2.92
Granted | $ / shares	4.11
Vested | $ / shares
Forfeited or expired | $ / shares	1.91
Non-vested at September 30, 2022 | $ / shares	$ 3.44