Consolidated Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Series A Preferred Stock, Mezzanine Equity [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Dec. 31, 2022	3	43			0
Balance at Dec. 31, 2022	$ 0	$ 0	$ 837,598	$ (824,532)	$ (3,054)	$ 10,012
Net income (loss)	$ 0	$ 0	0	(4,111)	$ 0	(4,111)
Redemption of Series A Preferred Stock (in shares)	(3)	0			0
Exercise of common stock warrants, net of expenses of $276 (in shares)	0	7			0
Exercise of common stock warrants, net of expenses of $276	$ 0	$ 0	843	0	$ 0	843
Reverse split adjustments - fractional share round ups (in shares)	0	1			0
Stock-based compensation expense	$ 0	$ 0	285	0	$ 0	285
Balance (in shares) at Mar. 31, 2023	0	51			0
Balance at Mar. 31, 2023	$ 0	$ 0	838,726	(828,643)	$ (3,054)	7,029
Balance (in shares) at Dec. 31, 2023	0	333			0
Balance at Dec. 31, 2023	$ 0	$ 0	851,268	(844,823)	$ (3,054)	3,391
Net income (loss)	0	0	0	10,219	0	10,219
Stock-based compensation expense	$ 0	$ 0	164	0	$ 0	164
Issuance of common stock, ATM Program, net of issuance costs of $44 (in shares)	0	143			0
Issuance of common stock, ATM Program, net of issuance costs of $44	$ 0	$ 1	1,366	0	$ 0	1,367
Issuance of common stock, equity consideration in debt extinguishment (in shares)	0	34			0
Issuance of common stock, equity consideration in debt extinguishment	$ 0	$ 0	280	0	$ 0	280
Balance (in shares) at Mar. 31, 2024	0	510			0
Balance at Mar. 31, 2024	$ 0	$ 1	$ 853,078	$ (834,604)	$ (3,054)	$ 15,421