Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued compensation	$ 32,179	$ 24,728
Accrued clinical and other research & development costs	19,458	22,822
Accrued manufacturing costs	5,336	12,779
Operating lease liability, current	9,463	8,308
Finance lease liability, current	83	3,726
Deferred research and development funding liability, current	21,101	14,129
Other accrued costs and current liabilities	7,401	4,579
Total accrued expenses and other current liabilities	$ 95,021	$ 91,071
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Total accrued expenses and other current liabilities	Total accrued expenses and other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total accrued expenses and other current liabilities	Total accrued expenses and other current liabilities