UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	At-the-Market Offering	PREFERRED STOCK	COMMON STOCK	COMMON STOCK Pre-funded Warrants	COMMON STOCK At-the-Market Offering	ADDITIONAL PAID-IN CAPITAL	ADDITIONAL PAID-IN CAPITAL At-the-Market Offering	ACCUMULATED DEFICIT	ACCUMULATED OTHER COMPREHENSIVE INCOME
Beginning balance (in shares) at Dec. 31, 2022			15,000
Beginning balance at Dec. 31, 2022			$ 0
Beginning balance (in shares) at Dec. 31, 2022				12,163,673
Beginning balance at Dec. 31, 2022	$ 14,106			$ 1			$ 402,701		$ (388,759)	$ 163
Increase (Decrease) in Shareholders' Equity
Net Loss	(1,750)								(1,750)
Unrealized Gain (Loss) on Available-for-Sale Investments	(3)									(3)
Foreign Currency Translation Adjustments	(4)									(4)
Issuance of Warrant in connection with the Third Amendment (in shares)					389,000
Stock-based Compensation	$ 193						193
Ending balance (in shares) at Mar. 31, 2023			15,000
Ending balance at Mar. 31, 2023			$ 0
Ending balance (in shares) at Mar. 31, 2023	12,552,673			12,552,673
Ending balance at Mar. 31, 2023	$ 12,542			$ 1			402,894		(390,509)	156
Beginning balance (in shares) at Dec. 31, 2023	15,000		15,000
Beginning balance at Dec. 31, 2023	$ 0		$ 0
Beginning balance (in shares) at Dec. 31, 2023	29,130,607			29,130,607
Beginning balance at Dec. 31, 2023	$ 21,291			$ 3			418,487		(397,198)	(1)
Increase (Decrease) in Shareholders' Equity
Net Loss	(1,731)								(1,731)
Unrealized Gain (Loss) on Available-for-Sale Investments	25									25
Issuance of stock, net of offering costs/At-The-Market (in shares)						358,210
Issuance of Common Stock, net of offering costs/At-The-Market		$ 560						$ 560
Vesting of Restricted Stock Units Issued, net of taxes withheld (in shares)				67,657
Issuance of Warrant in connection with the Third Amendment (Note 11)	247						247
Foreign Currency Translation Adjustments	0
Stock-based Compensation	$ 251						251
Ending balance (in shares) at Mar. 31, 2024	15,000		15,000
Ending balance at Mar. 31, 2024	$ 0		$ 0
Ending balance (in shares) at Mar. 31, 2024	29,556,474			29,556,474
Ending balance at Mar. 31, 2024	$ 20,643			$ 3			$ 419,545		$ (398,929)	$ 24