Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 145,425	$ 145,372
Less: accumulated depreciation	(75,402)	(72,533)
Total property and equipment, net	70,023	72,839
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	107,537	107,537
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	28,792	28,748
Computer equipment and purchased software
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	4,873	4,873
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment, gross	$ 4,223	$ 4,214

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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