Segment - Schedule of Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Segment Reporting Information [Line Items]
Revenue	$ 2	$ 7
Net loss	24,153	52,195
SPA Put/Call (Asset) Liability \| Level 3
Segment Reporting Information [Line Items]
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Reportable segment
Segment Reporting Information [Line Items]
Revenue	2	7
Technical operations	12,394	17,895
Clinical development	12,643	8,674
Support functions	5,638	8,455
Lease costs	3,709	4,446
Operations management	2,727	4,984
Research activities	2,410	3,530
Other segment items	(15,366)	4,218
Net loss	24,153	$ 52,195
Reportable segment \| SPA Put/Call (Asset) Liability \| Level 3
Segment Reporting Information [Line Items]
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