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Revenue - I-Mab Biopharma (Details) - USD ($) $ in Thousands | 3 Months Ended | 7 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Jul. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2021 | Dec. 31, 2022
Collaboration And Other Agreements [Line Items] |  |  |  |  |  |  |
Revenues | $ 10,397 | $ 41,734 |  | $ 48,029 | $ 78,842 |  |
Deferred revenue, current | 18,584 |  |  | 18,584 |  |  | $ 9,988
Deferred revenue, net of current portion | 64,260 |  |  | 64,260 |  |  | 59,480
I-Mab | I-Mab Biopharma Collaboration and License Agreement |  |  |  |  |  |  |
Collaboration And Other Agreements [Line Items] |  |  |  |  |  |  |
Non-refundable upfront payment |  |  |  |  |  | $ 15,000 |
Development and regulatory milestones recognized |  |  |  | 5,000 |  |  |
Revenues | 0 | 3,800 |  | 0 | 4,500 |  |
One Time Millstone Credit |  |  |  |  |  |  | $ 4,500
Incyte Corporation | RevenuesFromCMOAgreementsMember |  |  |  |  |  |  |
Collaboration And Other Agreements [Line Items] |  |  |  |  |  |  |
Non-refundable upfront payment |  |  | $ 10,000 |  |  |  |
Revenues | 4,500 | $ 1,100 |  | 9,600 | $ 5,100 |  |
Deferred revenue | 7,000 |  |  | 7,000 |  |  |
Deferred revenue, current | 6,400 |  |  | 6,400 |  |  |
Deferred revenue, net of current portion | $ 600 |  |  | $ 600 |  |  |

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