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Deferred Revenue - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Dec. 31, 2024
Disaggregation Of Revenue [Line Items]      
Current deferred revenue $ 41,337,000 $ 41,337,000 $ 55,689,000
Non-current deferred revenue 1,206,000 1,206,000 27,256,000
Revenue recognized 63,400,000 (87,061,000)  
Development Revenue | Genentech, Inc.      
Disaggregation Of Revenue [Line Items]      
Current deferred revenue 0 0 15,900,000
Non-current deferred revenue $ 0 $ 0 $ 25,400,000