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License and Collaboration Agreements - Additional Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
License and collaboration revenue |  |  | $ 1,157,000 | $ 0 | $ 2,240,000 | $ 52,000
Lepu Biotech Co., Ltd. |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
One-time upfront payment |  | $ 4,500,000 |  |  |  |
Collaboration agreement transaction price |  | 4,500,000 |  |  |  |
License and collaboration revenue |  |  | 0 | 0 | 0 | 0
Lepu Biotech Co., Ltd. | Maximum |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
Regulatory milestone payments |  | 2,500,000 |  |  |  |
Commercial milestone payments |  | $ 57,500,000 |  |  |  |
Kissei Pharmaceutical Co., Ltd. |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
One-time upfront payment | $ 10,000,000 |  |  |  |  |
License and collaboration revenue |  |  |  | $ 0 |  |
Royalties | 0 |  |  |  |  |
Kissei Pharmaceutical Co., Ltd. | Maximum |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
Commercial milestone payments | 67,000,000 |  |  |  |  |
Development and regulatory milestone payments | 33,000,000 |  |  |  |  |
License and collaboration revenue |  |  | $ 100,000 |  | $ 100,000 | $ 100,000
Kissei Pharmaceutical Co., Ltd. | Series D Redeemable Convertible Preferred Stock |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
Purchase of redeemable convertible preferred stock | $ 30,000,000 |  |  |  |  |

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