Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
BALANCE (in shares) at Dec. 31, 2022	21,127,130	(273,937)
BALANCE at Dec. 31, 2022	$ 21	$ (1,842)	$ 397,240	$ (349,146)	$ 46,273
Stock issued under defined contribution 401(k) retirement savings plan (in shares)	64,807	0
Stock issued under defined contribution 401(k) retirement savings plan	$ 0	$ 0	302	0	302
Share-based compensation	0	0	178	0	178
Net income	$ 0	$ 0	0	769	769
BALANCE (in shares) at Mar. 31, 2023	21,191,937	(273,937)
BALANCE at Mar. 31, 2023	$ 21	$ (1,842)	397,720	(348,377)	47,522
BALANCE (in shares) at Dec. 31, 2023	21,840,301	(273,937)
BALANCE at Dec. 31, 2023	$ 22	$ (1,842)	399,336	(341,497)	56,019
Stock issued under defined contribution 401(k) retirement savings plan (in shares)	107,305	0
Stock issued under defined contribution 401(k) retirement savings plan	$ 0	$ 0	287	0	287
Share-based compensation	0	0	225	0	225
Net income	$ 0	$ 0	0	1,510	1,510
BALANCE (in shares) at Mar. 31, 2024	21,947,606	(273,937)
BALANCE at Mar. 31, 2024	$ 22	$ (1,842)	$ 399,848	$ (339,987)	$ 58,041