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Significant Agreements - Supplemental Information related to the BMS Collaboration Agreement (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Collaboration receivable — related party | $ 120 |  | $ 120 |  | $ 0
Deferred revenue — related party | 8,315 |  | 8,315 |  | 7,092
Deferred revenue, net of current — related party | 59,562 |  | 59,562 |  | 63,218
Juno Therapeutics, Inc. | Collaborative Arrangement, Research Collaboration and License Agreement |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Collaboration receivable — related party | 120 |  | 120 |  | 0
Deferred revenue — related party | 8,315 |  | 8,315 |  | 7,092
Deferred revenue, net of current — related party | 59,562 |  | 59,562 |  | $ 63,218
Revenue recognized that was included in contract liability at the beginning of the period | 1,061 | $ 0 | 2,502 | $ 0 |
Revenue recognized from performance obligations fully or partially satisfied in previous periods | $ 5 | $ 0 | $ 3 | $ 0 |

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