Condensed Consolidated Statement of Changes in Convertible Preferred Stock and Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Convertible Series X Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance, shares at Dec. 31, 2023			4,885,512
Beginning balance at Dec. 31, 2023	$ 98,297		$ 91	$ 295,376	$ (63)	$ (288,517)
Beginning balance, shares at Dec. 31, 2023		24,610
Beginning balance at Dec. 31, 2023		$ 91,410
Issuance of common stock in connection with conversion of Series X preferred stock		$ (44,826)
Issuance of common stock in connection with conversion of Series X preferred stock, shares		(11,957)
Issuance of common stock in connection with conversion of Series X preferred stock			$ 12	44,814
Issuance of common stock in connection with conversion of Series X preferred stock, shares			11,957,000
Stock-based compensation expense	$ 150			150
Exercise of stock options, shares	0
Unrealized gain on short-term investments	$ 0
Net loss	(7,113)					(7,113)
Ending balance at Mar. 31, 2024	$ 91,334		$ 103	340,340	(63)	(295,630)
Ending balance, shares at Mar. 31, 2024			16,842,512
Ending balance at Mar. 31, 2024		$ 46,584
Ending balance, shares at Mar. 31, 2024		12,653
Beginning balance, shares at Dec. 31, 2024	21,666,012		21,666,012
Beginning balance at Dec. 31, 2024	$ 54,392		$ 108	360,697	(18)	(351,400)
Beginning balance, shares at Dec. 31, 2024		12,232
Beginning balance at Dec. 31, 2024	45,005	$ 45,005
Issuance of common stock	738			738
Issuance of common stock, shares			317,772
Stock-based compensation expense	$ 264			264
Exercise of stock options, shares	21,533		21,533
Unrealized gain on short-term investments	$ (45)				(45)
Foreign currency translation adjustments	31				31
Net loss	(5,501)					(5,501)
Ending balance at Mar. 31, 2025	$ 49,879		$ 108	$ 361,699	$ (32)	$ (356,901)
Ending balance, shares at Mar. 31, 2025	22,005,317		22,005,317
Ending balance at Mar. 31, 2025	$ 45,005	$ 45,005
Ending balance, shares at Mar. 31, 2025		12,232