Condensed 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	(1,220)	0	(1,220)
Balance at Mar. 31, 2023	464	548,304	(544,894)	(5,168)	(2,294)
Balance at Dec. 31, 2022	464	548,304	(544,674)	(5,168)	(1,074)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					(2,489)
Balance at Jun. 30, 2023	464	548,304	(547,163)	(5,168)	(3,563)
Balance at Mar. 31, 2023	464	548,304	(544,894)	(5,168)	(2,294)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	(1,269)	0	(1,269)
Balance at Jun. 30, 2023	464	548,304	(547,163)	(5,168)	(3,563)
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	(1,839)	0	(1,839)
Balance at Mar. 31, 2024	464	548,304	(551,784)	(5,168)	(8,184)
Balance at Dec. 31, 2023	464	548,304	(549,945)	(5,168)	(6,345)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)					(3,774)
Balance at Jun. 30, 2024	849	551,591	(553,719)	0	(1,279)
Balance at Mar. 31, 2024	464	548,304	(551,784)	(5,168)	(8,184)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	(1,935)	0	(1,935)
Sale of common stock - Equity Offering	385	3,287	0		8,840
Sale of common stock - Equity Offering				5,168
Balance at Jun. 30, 2024	$ 849	$ 551,591	$ (553,719)	$ 0	$ (1,279)