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Summary of Significant Accounting Policies - License Agreements (Details) - Rare Stone Group Ltd [Member] $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) item shares | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) project | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Mar. 31, 2022 USD ($)
Significant Agreements |  |  |  |  |  |  |  |
Realized loss on RareStone equity |  |  | $ 1,040 |  |  |  |  |
Loss on RareStone equity investment |  |  | $ 300 | $ 300 |  |  |  |
Upfront consideration | $ 8,040 |  |  |  |  |  |  |
Contract with customer liability revenue recognized |  | $ 0 |  |  | $ 0 |  |  |
Number of independent sub studies in patients | project |  |  |  |  | 4 |  |  |
Upfront payment | 7,000 |  |  |  |  |  |  |
Equity recorded at fair value | 1,040 |  |  | $ 1,040 |  |  |  | $ 2,440
Aggregate payment upon achievement of development and commercial milestones | $ 62,500 |  |  |  |  |  |  |
Shares issued for license agreement (in shares) | shares | 1,077,586 |  |  |  |  |  |  |
License agreement |  |  |  |  |  |  |  |
Significant Agreements |  |  |  |  |  |  |  |
Number of performance obligations | item | 2 |  |  |  |  |  |  |
License agreement commercial manufacturing supply discount |  |  |  |  | $ 1,286 |  | $ 1,286 |
Contract with customer liability revenue recognized |  |  |  |  |  | $ 6,754 |  |

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