Condensed Consolidated Statements of Stockholders Equity (Unaudited) - USD ($) $ in Thousands		Total	Warrant Inducement Agreements [Member]	January 2023 Offering [Member]	Preferred Stock [Member]	Common Stock [Member]		Common Stock [Member] Warrant Inducement Agreements [Member]		Common Stock [Member] January 2023 Offering [Member]		Additional Paid-in Capital [Member]	[1]	Additional Paid-in Capital [Member] Warrant Inducement Agreements [Member]	[1]	Additional Paid-in Capital [Member] January 2023 Offering [Member]	[1]	Accumulated Deficit [Member]
Balance (in shares) at Dec. 31, 2022					200,000	196,287	[1]
Balance at Dec. 31, 2022		$ 12,479			$ 2	$ 2	[1]					$ 121,665						$ (109,190)
Net loss		(2,340)																(2,340)
Stock-based compensation expense and related charges		93										93
Issuance of common stock upon warrant exercises (in shares)	[1]					76,188
Issuance of common stock upon warrant exercises		1,349				$ 1	[1]					1,348
Issuance of common stock warrants related to promissory note (in shares)	[1]									31,789
Issuance of common stock warrants related to promissory note				$ 2,166						$ 0	[1]					$ 2,166
Balance (in shares) at Mar. 31, 2023					200,000	304,264	[1]
Balance at Mar. 31, 2023		13,747			$ 2	$ 3	[1]					125,272						(111,530)
Balance (in shares) at Dec. 31, 2023					200,000	618,056	[1]
Balance at Dec. 31, 2023		11,313			$ 2	$ 6	[1]					132,811						(121,506)
Net loss		(3,527)																(3,527)
Stock-based compensation expense and related charges		118										118
Issuance of common stock for vesting of restricted stock units (shares)	[1]					5,186
Issuance of common stock for vesting of restricted stock units		0				$ 0	[1]					0
Issuance of common stock warrants related to promissory note (in shares)	[1]							228,162
Issuance of common stock warrants related to promissory note			$ 2,160					$ 2	[1]					$ 2,158
Reverse stock split fractional share settlement	[1]					(102)
Balance (in shares) at Mar. 31, 2024					200,000	851,302	[1]
Balance at Mar. 31, 2024		$ 10,064			$ 2	$ 8	[1]					$ 135,087						$ (125,033)

[1] (*) Adjusted to reflect the 1-for-15 reverse stock split effected on April 5, 2024.