Asset Acquisition and Collaborative Arrangement (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Asset Acquisition [Line Items]
Research and development	[1]	$ 122,365	$ 58,035	$ 214,104	$ 115,899
Warrant expense				11,331	$ 0
GE Aerospace
Asset Acquisition [Line Items]
Research and development		6,511		12,645
Warrant expense		5,697		11,331
GE Aerospace | Unvested warrants
Asset Acquisition [Line Items]
Unrecognized compensation cost		49,832		$ 49,832
Biocogniv, Inc
Asset Acquisition [Line Items]
Total consideration consisted of common stock		10,797
Payments for asset acquisitions		2,561
Cash holdback payable		$ 1,645
Period of payments for asset acquisitions, payable in installment one		6 months
Period of payments for asset acquisitions, payable in installment two		12 months
In-process research and development expense		$ 15,003
Direct transaction expenses		$ 1,144

[1] Includes related party amounts of $5,697 and $0 attributable to warrant expense (research and development) and $136 and $(37) (general and administrative) for the three months ended June 30, 2026 and 2025, respectively. Includes related party amounts of $11,331 and $0 attributable to warrant expense (research and development) and $223 and $(140) (general and administrative) for the six months ended June 30, 2026 and 2025, respectively (see Note 12).