Consolidated Statements of Changes in Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2022	$ 464	$ 548,304	$ (544,674)	$ (5,168)	$ (1,074)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	(5,271)	0	(5,271)
Balance at Dec. 31, 2023	464	548,304	(549,945)	(5,168)	(6,345)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	(6,620)	0	(6,620)
Sale of common stock Equity Offering	385	3,287	0		8,840
Sale of common stock Equity Offering				5,168
Balance at Dec. 31, 2024	$ 849	$ 551,591	$ (556,565)	$ 0	$ (4,125)