Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 115,297	$ 107,278
Less: accumulated depreciation	(62,895)	(52,042)
Total property and equipment, net	52,402	55,236
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	47,755	46,905
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	45,797	40,554
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	17,493	15,998
Computer equipment and purchased software
Property, Plant and Equipment [Line Items]
Total property and equipment	2,203	1,841
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,049	$ 1,980