Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Common Stock [Member] Series I Convertible Preferred Stock [Member]	Common Stock [Member] Series J Convertible Preferred Stock [Member]	Additional Paid in Capital [Member]	Additional Paid in Capital [Member] Series I Convertible Preferred Stock [Member]	Additional Paid in Capital [Member] Series J Convertible Preferred Stock [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Other Comprehensive Income [Member] Series I Convertible Preferred Stock [Member]	Accumulated Other Comprehensive Income [Member] Series J Convertible Preferred Stock [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Series I Convertible Preferred Stock [Member]	Accumulated Deficit [Member] Series J Convertible Preferred Stock [Member]	Total	Series I Convertible Preferred Stock [Member]	Series J Convertible Preferred Stock [Member]
Balance at Dec. 31, 2022	$ 0			$ 279,736			$ 38			$ (267,417)			$ 12,357
Balance (in shares) at Dec. 31, 2022	15,326
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0			0			0			(20,209)			(20,209)
Unrealized foreign currency translation adjustment	0			0			(13)			0			(13)
Unrealized gain on marketable securities	0			0			(56)			0			(56)
Stock-based compensation	$ 0			670			0			0			670
Stock-based compensation (in shares)	0
Issuance of common stock, net	$ 0			2,119			0			0			2,119
Issuance of common stock, net (in shares)	18,781
Issuance of common stock from conversion of Convertible Preferred Stock		$ 0	$ 0		$ 0	$ 2,621		$ 0	$ 0		$ 0	$ 0		$ 0	$ 2,621
Issuance of common stock from conversion of convertible preferred stock (in shares)		300	97,631
Issuance costs related to 2022 common stock offering	$ 0			(11)			0			0			(11)
Issuance of common stock from exercise of warrants		$ 0			307			0			0			307
Issuance of common stock from exercise of warrants (in shares)		30,318
Reclassification of warrants to equity	0			7,623			0			0			7,623
Series J Convertible Preferred Stock deemed dividend	0			(2,297)			0			0			(2,297)
Series J Convertible Preferred Stock PIK dividend	0			(121)			0			0			(121)
Balance at Dec. 31, 2023	$ 0			290,647			(31)			(287,626)			2,990
Balance (in shares) at Dec. 31, 2023	162,356
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0			0			0			(11,165)			(11,165)
Unrealized foreign currency translation adjustment	$ 0			0			(16)			0			(16)
Unrealized gain on marketable securities													0
Stock-based compensation				478			0			0			478
Stock-based compensation (in shares)	0
Issuance of common stock, net	$ 0			2,051			0			0			2,051
Issuance of common stock, net (in shares)	1,274,108
Issuance of common stock from conversion of Convertible Preferred Stock			$ 0			$ 1,535			$ 0			$ 0			$ 1,535
Issuance of common stock from conversion of convertible preferred stock (in shares)			31,971
Issuance of common stock from exercise of warrants		$ 0			$ 5,897			$ 0			$ 0			$ 5,897
Issuance of common stock from exercise of warrants (in shares)		2,905,533
Reclassification of warrants to equity	$ 0			4,217			0			0			4,217
Series J Convertible Preferred Stock deemed dividend	0			541			0			0			541
Balance at Dec. 31, 2024	$ 0			$ 305,366			$ (47)			$ (298,791)			$ 6,528
Balance (in shares) at Dec. 31, 2024	4,373,968