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Out-License Agreements (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 36 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 26, 2024 | Mar. 14, 2024 | Feb. 28, 2023 | Sep. 30, 2020 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Amortized cost |  |  |  |  |  |  |  | $ 1,108 |
Research and development |  |  |  |  | $ 12,066 | $ 12,356 |  |  |
LianBio |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Special cash dividend (usd per share) |  | $ 4.80 |  |  |  |  |  |  |
Special cash dividends paid |  | $ 700 |  |  | 700 |  |  |  |
LianBio | License agreement |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Upfront payment |  |  |  |  | 2,500 |  | $ 2,500 |  | $ 15,000
Additional cash payment |  |  |  |  |  |  |  |  | 10,000
Amortized cost |  |  |  |  |  |  |  |  | 1,200
Revenue recognized | $ 2,500 |  |  |  |  |  | 83,200 |  |
Days due within | 15 days |  |  |  |  |  |  |  |
Shares issued in warrant conversion (in shares) | 78,373 |  |  |  |  |  |  |  |
Proceeds from warrant cancellation payment | $ 400 |  |  |  |  |  |  |  |
Upfront payment received |  |  |  |  | 15,000 |  |  |  |
LianBio | License agreement | Milestone Determined by the Company |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Milestone payments to be achieved |  |  |  |  |  |  |  |  | $ 10,000
LianBio | License agreement | Development and Regulatory Milestone |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Milestone payments to be achieved |  |  |  |  | 67,500 |  | 67,500 |  |
Revenue recognized |  |  | $ 2,500 |  |  |  |  |  |
Elanco | License agreement |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Common stock issued for license agreement, value |  |  |  | $ 3,100 |  |  |  |  |
Maximum milestone payments |  |  |  |  | 75,000 |  | 75,000 |  |
Grandpharma | License agreement |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Maximum milestone payments |  |  |  |  | 100,000 |  | 100,000 |  |
Grandpharma | License agreement | Development and Regulatory Milestone |  |  |  |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |  |  |  |
Maximum milestone payments |  |  |  |  | $ 20,000 |  | $ 20,000 |  |

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