Common Stock and Common Stock Equivalents (Schedule of summarizes stock option activity) (Details) - $ / shares	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Common Stock And Common Stock Equivalents Abstract
Options outstanding at beginning of the year	28,000	28,000
Options granted	0	0
Options canceled or expired	28,000	0
Options outstanding at end of the year	0	28,000
Options exercisable at end of the year	0	22,250
Weighted average exercise price outstanding, at beginning of the year	$ 7.8	$ 7.8
Weighted average exercise price outstanding, at end of the year		7.8
Weighted average exercise price exercisable at end of the year		8.26
Weighted average remaining contractual term outstanding, at end of the year	3 years 9 months
Range of exercise prices at end of the year, minimum		4.65
Range of exercise prices at end of the year, maximum		$ 13.5