Certain Balance Sheet Components - Schedule of Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Property, plant and equipment
Subtotal	$ 221,510	$ 205,999
Less: accumulated depreciation and amortization	(66,973)	(50,223)
Total property and equipment, net	154,537	155,776
Leasehold improvements
Property, plant and equipment
Subtotal	147,924	147,924
Laboratory machinery and equipment
Property, plant and equipment
Subtotal	47,261	40,669
Machinery and equipment
Property, plant and equipment
Subtotal	7,514	7,514
Computer hardware and software
Property, plant and equipment
Subtotal	7,220	4,905
Furniture and fixtures
Property, plant and equipment
Subtotal	4,140	4,140
Construction in progress
Property, plant and equipment
Subtotal	$ 7,451	$ 847