License and Other Agreements - Broad License Agreement - Change in Fair Value of Success Payment Liability (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||||
| Change in fair value of derivative liabilities | $ (4,700) | $ 2,600 | $ (3,000) | $ (1,900) |
| Broad Institute | ||||
| Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] | ||||
| Change in fair value of derivative liabilities | $ (2,400) | $ 1,400 | $ (1,700) | $ (900) |