Significant Agreements - Schedule of Supplemental Information related to the BMS Collaboration Agreement (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | |||||
| Deferred revenue — related party | $ 7,934 | $ 7,934 | $ 7,824 | ||
| Deferred revenue, net of current — related party | 56,033 | 56,033 | 58,127 | ||
| Juno Therapeutics, Inc. | Collaborative Arrangement, Research Collaboration and License Agreement | |||||
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | |||||
| Deferred revenue — related party | 7,934 | 7,934 | 7,824 | ||
| Deferred revenue, net of current — related party | 56,033 | 56,033 | $ 58,127 | ||
| Revenue recognized that was included in contract liability at the beginning of the period | 1,152 | $ 1,061 | 2,008 | $ 2,502 | |
| Revenue recognized from performance obligations fully or partially satisfied in previous periods | $ 3 | $ 5 | $ 3 | $ 3 | |