Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Jun. 30, 2021	29,838,177			34,900
Balance at Jun. 30, 2021	$ 60	$ 50,516	$ (36,143)	$ (99)	$ 14,334
Compensation expense for employee stock options	$ 0	369	0	$ 0	$ 369
Exercised (in shares)	146,333			0	146,333
Shares issued upon exercise of stock options	$ 0	34	0	$ 0	$ 34
Net (loss) income	0	0	3,838	0	3,838
Net income (loss)	$ 0	0	3,838	$ 0	3,838
Balance (in shares) at Jun. 30, 2022	29,984,510			34,900
Balance at Jun. 30, 2022	$ 60	50,919	(32,305)	$ (99)	18,575
Compensation expense for employee stock options	0	320	0	0	$ 320
Exercised (in shares)					0
Net (loss) income	0	0	(34)	0	$ (34)
Net income (loss)	$ 0	0	(34)	$ 0	(34)
Balance (in shares) at Jun. 30, 2023	29,984,510			34,900
Balance at Jun. 30, 2023	$ 60	$ 51,239	$ (32,339)	$ (99)	$ 18,861