CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands		Total	Common Stock [Member]		Additional Paid-in Capital [Member]	[1]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Balances at beginning of period at Dec. 31, 2022		$ 32,714	$ 3	[1]	$ 356,010		$ (322,334)	$ (965)
Balances at beginning of period (in shares) at Dec. 31, 2022	[1]		2,871,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from vesting of restricted stock units,shares (Note 7)	[1]		2,000
Tax withholding related to vesting of restricted stock units		(10)			(10)
Stock-based compensation expense		1,069			1,069
Net loss		(5,783)					(5,783)
Foreign currency translation adjustments		(5)						(5)
Balances at end of period at Mar. 31, 2023		27,985	$ 3	[1]	357,069		(328,117)	(970)
Balances at end of period (in shares) at Mar. 31, 2023	[1]		2,873,000
Balances at beginning of period at Dec. 31, 2022		32,714	$ 3	[1]	356,010		(322,334)	(965)
Balances at beginning of period (in shares) at Dec. 31, 2022	[1]		2,871,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		21,917
Balances at end of period at Dec. 31, 2023		13,639	$ 3	[1]	358,884		(344,251)	(997)
Balances at end of period (in shares) at Dec. 31, 2023	[1]		3,011,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from vesting of restricted stock units,shares (Note 7)	[1]		50,000
Issuance of common stock from vesting of restricted stock units (Note 7)	[1]		$ 0
Tax withholding related to vesting of restricted stock units		(63)			(63)
Stock-based compensation expense		413			413
Net loss		(2,411)					(2,411)
Foreign currency translation adjustments		6						6
Balances at end of period at Mar. 31, 2024		$ 11,584	$ 3	[1]	$ 359,234		$ (346,662)	$ (991)
Balances at end of period (in shares) at Mar. 31, 2024	[1]		3,061,000

[1] The shares of common stock, par value of common stock issued and outstanding, and additional paid-in capital amounts for all periods presented have been retroactively adjusted to reflect the one-for-six reverse stock split of the Company's issued and outstanding common stock which took effect on April 12, 2024 (Note 1)