Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total property and equipment	$ 67,877	$ 67,617
Less: accumulated depreciation and amortization	(26,481)	(24,340)
Total property and equipment, net	41,396	43,277
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	25,668	25,608
Laboratory Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	20,066	19,973
Manufacturing Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	17,716	17,716
Construction in Progress
Property Plant And Equipment [Line Items]
Total property and equipment	1,809	1,730
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment	1,636	1,614
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	$ 982	$ 976