CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (DEFICIT) / PARENT NET INVESTMENT - USD ($) $ in Thousands	Total	Prior to Business Combination	Redeemable shares reclassified to Common Stock	Common Stock	Common Stock Prior to Business Combination	Common Stock Redeemable shares reclassified to Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Prior to Business Combination	Additional Paid-In Capital Redeemable shares reclassified to Common Stock	Accumulated Deficit	Accumulated Deficit Prior to Business Combination	Accumulated Deficit Redeemable shares reclassified to Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (23,193)
Beginning balance at Dec. 31, 2022	362,596
Parent Net Investment [Roll Forward]
Contributions from parent	19,747
Net loss	(23,193)
Ending balance at Mar. 31, 2023	359,150
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(68,571)
Beginning balance at Dec. 31, 2022	362,596
Parent Net Investment [Roll Forward]
Net loss	(68,571)
Ending balance at Sep. 30, 2023	348,642
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(22,308)
Beginning balance at Mar. 31, 2023	359,150
Parent Net Investment [Roll Forward]
Contributions from parent	17,443
Net loss	(22,308)
Ending balance at Jun. 30, 2023	354,285
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(23,070)
Parent Net Investment [Roll Forward]
Contributions from parent	17,427
Net loss	(23,070)
Ending balance at Sep. 30, 2023	348,642
Beginning balance at Dec. 31, 2023	339,021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(11,789)
Beginning balance at Dec. 31, 2023	339,021
Parent Net Investment [Roll Forward]
Contributions from parent	22,474
Net loss	(11,789)
Ending balance at Feb. 13, 2024	349,706
Beginning balance at Dec. 31, 2023	$ 339,021
Ending balance (in shares) at Sep. 30, 2024	78,789,516			78,789,516
Ending balance at Sep. 30, 2024	$ 167,499			$ 7			$ 849,621			$ (682,129)
Beginning balance at Dec. 31, 2023	339,021
Ending balance at Sep. 30, 2024	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of merger consideration shares (in shares)	3,000,000
Issuance of merger consideration shares	$ 36,300
Net loss	$ (601,111)
Ending balance (in shares) at Sep. 30, 2024	78,789,516			78,789,516
Ending balance at Sep. 30, 2024	$ 167,499			$ 7			849,621			(682,129)
Beginning balance at Feb. 13, 2024	349,706
Parent Net Investment [Roll Forward]
Net loss	(601,111)
Ending balance at Sep. 30, 2024	$ 0
Beginning balance (in shares) at Feb. 14, 2024	60,166,269			13,141,359	7,187,500	5,953,859
Beginning balance at Feb. 14, 2024	$ (19,068)	$ (81,017)	$ 61,949	$ 2	$ 1	$ 1	61,948	$ 0	$ 61,948	(81,018)	$ (81,018)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Private offering proceeds, net (in shares)				44,024,910
Private offering proceeds, net	417,371			$ 4			417,367
Issuance of merger consideration shares (in shares)				3,000,000
Issuance of merger consideration shares	36,300						36,300
Share-based compensation (in shares)				2,758,334
Share-based compensation	10,080						10,080
Net loss	(180,105)									(180,105)
Ending balance (in shares) at Mar. 31, 2024				62,924,603
Ending balance at Mar. 31, 2024	264,578			$ 6			525,695			(261,123)
Parent Net Investment [Roll Forward]
Net loss	$ (180,105)									(180,105)
Share-based compensation (in shares)	1,920,832
Share-based compensation	$ 22,905						22,905
Net loss	(165,436)									(165,436)
Ending balance (in shares) at Jun. 30, 2024				64,845,435
Ending balance at Jun. 30, 2024	122,047			$ 6			548,600			(426,559)
Parent Net Investment [Roll Forward]
Net loss	(165,436)									(165,436)
Private offering proceeds, net (in shares)				7,500,000
Private offering proceeds, net	142,517			$ 1			142,516
Issuance of Common Stock upon exercise of warrants (in shares)				6,315,977
Issuance of Common Stock upon exercise of warrants	141,756						141,756
Share-based compensation (in shares)				128,104
Share-based compensation	16,749						16,749
Net loss	$ (255,570)									(255,570)
Ending balance (in shares) at Sep. 30, 2024	78,789,516			78,789,516
Ending balance at Sep. 30, 2024	$ 167,499			$ 7			$ 849,621			(682,129)
Parent Net Investment [Roll Forward]
Net loss	(255,570)									$ (255,570)
Ending balance at Sep. 30, 2024	$ 0