Revision of Previously Issued Financial Statements - Revised prior period amounts on the consolidated financial statements to correct the misstatement (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Liabilities, Current [Abstract]
Purchase warrant liability	$ 5,713	$ 6,088	$ 8,359		$ 6,088	$ 5,713		$ 21,047
Total current liabilities	7,647	8,511	14,866		8,511	7,647		30,288
Equity, Attributable to Parent [Abstract]
Additional paid-in capital	456,551	456,450	455,803		456,450	456,551		453,565
Accumulated deficit	(440,937)	(440,820)	(443,898)		(440,820)	(440,937)		(418,292)
Total stockholders' equity	13,108	13,124	9,399	$ 43,404	13,124	13,108	$ 43,404	32,771	$ 54,774	$ 82,610
Statement of Comprehensive Income [Abstract]
Change in fair value of purchase warrant liability	376	2,270	12,688	0	14,958	15,334	0
Loss on purchase warrant liability								(7,652)
Other income (expense)	1			(1)		(1)	(9)	(915)
Other income (expense), net	631	2,664	13,239	548	15,903	16,534	1,784	(6,099)
Loss before income taxes	(117)	3,083		(12,075)	(22,522)	(22,640)	(42,736)	(61,260)
Net income (loss)	$ (117)	$ 3,078	$ (25,606)	$ (12,078)	$ (22,528)	$ (22,645)	$ (42,748)	$ (61,274)
Net loss per share - basic	$ (0.01)		$ (2.11)	$ (2.57)	$ (1.85)	$ (1.86)	$ (9.17)	$ (9.42)
Net loss per share - diluted	$ (0.01)	$ 0.25	$ (2.11)	$ (2.57)	$ (1.85)	$ (1.86)	$ (9.17)	$ (9.42)
Statement of Cash Flows [Abstract]
Net loss	$ (117)	$ 3,078	$ (25,606)	$ (12,078)	$ (22,528)	$ (22,645)	$ (42,748)	$ (61,274)
Change in fair value of warrant liability			(12,688)		(14,958)	(15,334)	0	7,652
Transaction costs allocated to warrant liabilities								906
Statement of Stockholders' Equity [Abstract]
Additional paid-in capital	456,551	456,450	455,803		456,450	456,551		453,565
Accumulated deficit	(440,937)	(440,820)	(443,898)		(440,820)	(440,937)		(418,292)
Total stockholders' equity	$ 13,108	13,124	9,399	$ 43,404	13,124	$ 13,108	$ 43,404	32,771	$ 54,774	$ 82,610
ScenarioPreviouslyReportedMember
Liabilities, Current [Abstract]
Purchase warrant liability		3,229	4,433		3,229			11,163
Total current liabilities		5,652	10,940		5,652			20,404
Equity, Attributable to Parent [Abstract]
Additional paid-in capital		462,342	461,696		462,342			459,458
Accumulated deficit		(443,853)	(445,865)		(443,853)			(414,301)
Total stockholders' equity		15,983	13,325		15,983			42,655
Statement of Comprehensive Income [Abstract]
Change in fair value of purchase warrant liability		1,204	6,730		7,934
Loss on purchase warrant liability								(4,058)
Other income (expense)								(517)
Other income (expense), net		1,598	7,281		8,879			(2,107)
Loss before income taxes		2,017			(29,547)			(57,268)
Net income (loss)		$ 2,012	$ (31,564)		$ (29,552)			$ (57,282)
Net loss per share - basic		$ 0.16	$ (2.6)		$ (2.43)			$ (8.81)
Net loss per share - diluted		$ 0.16	$ (2.6)		$ (2.43)			$ (8.81)
Statement of Cash Flows [Abstract]
Net loss		$ 2,012	$ (31,564)		$ (29,552)			$ (57,282)
Change in fair value of warrant liability			(6,730)		(7,934)			4,058
Transaction costs allocated to warrant liabilities								508
Statement of Stockholders' Equity [Abstract]
Additional paid-in capital		462,342	461,696		462,342			459,458
Accumulated deficit		(443,853)	(445,865)		(443,853)			(414,301)
Total stockholders' equity		15,983	13,325		15,983			42,655
RestatementAdjustmentMember
Liabilities, Current [Abstract]
Purchase warrant liability		2,859	3,926		2,859			9,884
Total current liabilities		2,859	3,926		2,859			9,884
Equity, Attributable to Parent [Abstract]
Additional paid-in capital		(5,892)	(5,893)		(5,892)			(5,893)
Accumulated deficit		3,033	1,967		3,033			(3,991)
Total stockholders' equity		(2,859)	(3,926)		(2,859)			(9,884)
Statement of Comprehensive Income [Abstract]
Change in fair value of purchase warrant liability		1,066	5,958		7,024
Loss on purchase warrant liability								(3,594)
Other income (expense)								(398)
Other income (expense), net		1,066	5,958		7,024			(3,992)
Loss before income taxes		1,066			7,024			(3,992)
Net income (loss)		$ 1,066	$ 5,958		$ 7,024			$ (3,992)
Net loss per share - basic		$ 0.09	$ 0.49		$ 0.58			$ (0.61)
Net loss per share - diluted		$ 0.09	$ 0.49		$ 0.58			$ (0.61)
Statement of Cash Flows [Abstract]
Net loss		$ 1,066	$ 5,958		$ 7,024			$ (3,992)
Change in fair value of warrant liability			(5,958)		(7,024)			3,594
Transaction costs allocated to warrant liabilities								398
Statement of Stockholders' Equity [Abstract]
Additional paid-in capital		(5,892)	(5,893)		(5,892)			(5,893)
Accumulated deficit		3,033	1,967		3,033			(3,991)
Total stockholders' equity		$ (2,859)	$ (3,926)		$ (2,859)			$ (9,884)