Condensed 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			(6,485)			(6,485)
Unrealized foreign currency translation adjustment	0			0			(7)			0			(7)
Unrealized gain on marketable securities	0			0			6			0			6
Stock-based compensation	$ 0			181			0			0			181
Stock-based compensation (in shares)	0
Issuance costs related to ATM offering	$ 0			(11)			0			0			(11)
Issuance of common stock from conversion of Convertible Preferred Stock		$ 0			$ 0			$ 0			$ 0			$ 0
Issuance of common stock from conversion of convertible preferred stock (in shares)		300
Reclassification of warrants to equity	0			7,623			0			0			7,623
Issuance of common stock from exercise of warrants	$ 0			0			0			0			0
Issuance of common stock from exercise of warrants (in shares)	18,858
Balance at Mar. 31, 2023	$ 0			287,529			37			(273,902)			13,664
Balance (in shares) at Mar. 31, 2023	34,484
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													(11,330)
Balance at Jun. 30, 2023	$ 0			289,845			(24)			(278,747)			11,074
Balance (in shares) at Jun. 30, 2023	53,265
Balance at Dec. 31, 2022	$ 0			279,736			38			(267,417)			12,357
Balance (in shares) at Dec. 31, 2022	15,326
Balance at Dec. 31, 2023	$ 0			290,647			(31)			(287,626)			2,990
Balance (in shares) at Dec. 31, 2023	162,356
Balance at Mar. 31, 2023	$ 0			287,529			37			(273,902)			13,664
Balance (in shares) at Mar. 31, 2023	34,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0			0			0			(4,845)			(4,845)
Unrealized foreign currency translation adjustment	0			0			0			0			(7)
Unrealized gain on marketable securities	0			0			(61)			0			(61)
Stock-based compensation	$ 0			197			0			0			197
Stock-based compensation (in shares)	0
Issuance costs related to ATM offering	$ 0			(98)			0			0			(98)
Issuance of common stock from ATM offering, net	$ 0			2,217			0			0			2,217
Issuance of common stock, net	18,781
Balance at Jun. 30, 2023	$ 0			289,845			(24)			(278,747)			11,074
Balance (in shares) at Jun. 30, 2023	53,265
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			(4,330)			(4,330)
Unrealized foreign currency translation adjustment	0			0			(9)			0			(9)
Stock-based compensation	$ 0			158			0			0			158
Stock-based compensation (in shares)	0
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
Series J Convertible Preferred Stock deemed dividend	$ 0			541			0			0			541
Balance at Mar. 31, 2024	$ 0			292,881			(40)			(291,956)			885
Balance (in shares) at Mar. 31, 2024	194,327
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													(12,055)
Balance at Jun. 30, 2024	$ 0			292,887			(42)			(299,681)			(6,836)
Balance (in shares) at Jun. 30, 2024	515,744
Balance at Mar. 31, 2024	$ 0			292,881			(40)			(291,956)			885
Balance (in shares) at Mar. 31, 2024	194,327
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ 0			0			0			(7,725)			(7,725)
Unrealized foreign currency translation adjustment	0			0			(2)			0			(2)
Stock-based compensation	$ 0			115			0			0			115
Stock-based compensation (in shares)	0
Issuance of common stock, net	$ 0			(109)			0			0			(109)
Issuance of common stock, net	321,417
Balance at Jun. 30, 2024	$ 0			$ 292,887			$ (42)			$ (299,681)			$ (6,836)
Balance (in shares) at Jun. 30, 2024	515,744