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Leases - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Jan. 31, 2021 renewalOption | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Oct. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Lessee Lease Description [Line Items] |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  | $ 26,779,000 |  | $ 26,779,000 |  | $ 30,997,000 |  |
Total lease liabilities |  |  | 25,581,000 |  | 25,581,000 |  |  |  |
Operating lease rent expense recognized |  |  | $ 2,700,000 | $ 1,900,000 | 5,400,000 | $ 3,900,000 |  |  |
New Corporate Headquarters Facility |  |  |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |  |  |
Number of renewal options | renewalOption |  | 2 |  |  |  |  |  |  |
Operating lease, renewal term |  | 60 months |  |  |  |  |  |  |
Operating lease, extended term |  | 60 days |  |  |  |  |  |  |
San Carlos |  |  |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  |  |  |  | $ 28,400,000
Total lease liabilities |  |  |  |  |  |  |  |  | $ 12,900,000
Lonza Commercial Manufacturing and Supply Agreement |  |  |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  |  | 0 |  |
Total lease liabilities |  |  |  |  |  |  | $ 0 |  |
Operating lease rent expense recognized |  |  |  |  | $ 0 |  |  |  |
Assignment Agreement |  |  |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  |  |  | $ 16,700,000 |
Total lease liabilities |  |  |  |  |  |  |  | $ 16,800,000 |
Operating lease, agreement term |  |  | 10 years |  | 10 years |  |  |  |
Assumed lease rental payment | $ 1,900,000 |  |  |  |  |  |  |  |
Operating lease, rent adjustment percentage |  |  | 0.03 |  | 0.03 |  |  |  |

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