Additional Statements of Operations and Comprehensive Loss Information - Change in Fair Value of Financial Instruments Consists (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Apr. 18, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative	$ (300)	$ 16,849	$ 1,741	$ 31,004	$ (1,043)
Derivative Warrant Liabilities
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		11,523	0	24,760	0
FPA Derivative Liability
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		(463)	0	(96)	0
Liability-classified Consideration Shares
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		1,732	0	2,028	0
2024 Convertible Notes
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		(209)	0	(92)	0
Legacy Convertible Notes
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		0	1,741	0	(1,043)
Tranche Rights
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Loss on derivative		$ 4,266	$ 0	$ 4,403	$ 0