Consolidated Statement of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member] Series D Preferred Stock [Member]	Common Stock Outstanding [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Jun. 30, 2022	281	1,686
Balance at Jun. 30, 2022	$ 0	$ 190,642	$ 0	$ 79,505	$ (215,712)	$ (1,199)	$ 53,236
Net change in available-for-sale marketable securities	$ 0	$ 0	0	0	0	(254)	(254)
Stock-based compensation (in shares)	0	4
Stock-based compensation	$ 0	$ 1	0	1,497	0	0	1,498
Restricted stock issuance (in shares)	0	2
Restricted stock issuance	$ 0	$ 0	0	0	0	0	0
Purchase of treasury stock (in shares)	0	(10)
Purchase of treasury stock	$ 0	$ 0	(119)	0	0	0	(119)
Net loss	$ 0	$ 0	0	0	(9,642)	0	(9,642)
Balance (in shares) at Jun. 30, 2023	281	1,682
Balance at Jun. 30, 2023	$ 0	$ 190,643	(119)	81,002	(225,354)	(1,453)	44,719
Net change in available-for-sale marketable securities	$ 0	$ 0	0	0	0	276	276
Stock-based compensation (in shares)	0	0
Stock-based compensation	$ 0	$ 0	0	1,478	0	0	1,478
Restricted stock issuance (in shares)	0	20
Restricted stock issuance	$ 0	$ 0	0	0	0	0	0
Purchase of treasury stock							0
Net loss	$ 0	$ 0	0	0	(11,666)	0	(11,666)
Balance (in shares) at Jun. 30, 2024	281	1,702
Balance at Jun. 30, 2024	$ 0	$ 190,643	$ (119)	$ 82,480	$ (237,020)	$ (1,177)	$ 34,807