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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, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Lepu Biotech Co., Ltd. |  |  |  |  |  |
License and Collaboration Agreements [Line Items] |  |  |  |  |  |
One-time upfront payment |  | $ 4,500,000 |  |  |  |
Collaboration agreement transaction price |  | 4,500,000 |  |  |  |
Development income |  |  | $ 0 | $ 0 | $ 500,000 | $ 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 |  |  |  |  |
Development income |  |  | $ 100,000 | $ 0 | $ 100,000 | $ 200,000
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 |  |  |  |  |
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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- Definition The cash outflow to reacquire preferred stock originally issued and identified as a security that can be exchanged for another type of financial security. This repurchased stock is held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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