Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - 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	(368)	(368)
Stock-based compensation (in shares)	0	2
Stock-based compensation	$ 0	$ 0	0	387	0	0	387
Net loss	$ 0	$ 0	0	0	(2,529)	0	(2,529)
Balance (in shares) at Sep. 30, 2022	281	1,688
Balance at Sep. 30, 2022	$ 0	$ 190,642	0	79,892	(218,241)	(1,567)	50,726
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							(370)
Net loss							(4,947)
Balance (in shares) at Dec. 31, 2022	281	1,690
Balance at Dec. 31, 2022	$ 0	$ 190,643	0	80,295	(220,659)	(1,569)	48,710
Balance (in shares) at Sep. 30, 2022	281	1,688
Balance at Sep. 30, 2022	$ 0	$ 190,642	0	79,892	(218,241)	(1,567)	50,726
Net change in available-for-sale marketable securities	$ 0	$ 0	0	0	0	(2)	(2)
Stock-based compensation (in shares)	0	2
Stock-based compensation	$ 0	$ 1	0	403	0	0	404
Net loss	$ 0	$ 0	0	0	(2,418)	0	(2,418)
Balance (in shares) at Dec. 31, 2022	281	1,690
Balance at Dec. 31, 2022	$ 0	$ 190,643	0	80,295	(220,659)	(1,569)	48,710
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	(54)	(54)
Stock-based compensation (in shares)	0	0
Stock-based compensation	$ 0	$ 0	0	364	0	0	364
Issuance of restricted stock (in shares)	0	20
Net loss	$ 0	$ 0	0	0	(2,912)	0	(2,912)
Balance (in shares) at Sep. 30, 2023	281	1,702
Balance at Sep. 30, 2023	$ 0	$ 190,643	(119)	81,366	(228,266)	(1,507)	42,117
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							270
Net loss							(5,553)
Balance (in shares) at Dec. 31, 2023	281	1,702
Balance at Dec. 31, 2023	$ 0	$ 190,643	(119)	81,839	(230,907)	(1,182)	40,274
Balance (in shares) at Sep. 30, 2023	281	1,702
Balance at Sep. 30, 2023	$ 0	$ 190,643	(119)	81,366	(228,266)	(1,507)	42,117
Net change in available-for-sale marketable securities	$ 0	$ 0	0	0	0	325	325
Stock-based compensation (in shares)	0	0
Stock-based compensation	$ 0	$ 0	0	473	0	0	473
Net loss	$ 0	$ 0	0	0	(2,641)	0	(2,641)
Balance (in shares) at Dec. 31, 2023	281	1,702
Balance at Dec. 31, 2023	$ 0	$ 190,643	$ (119)	$ 81,839	$ (230,907)	$ (1,182)	$ 40,274