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Commitments and Contingencies - Narrative (Details) € in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended | 68 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 12, 2024 USD ($) | Dec. 31, 2024 USD ($) | Oct. 01, 2024 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2025 EUR (€) | Dec. 31, 2022 agreement | Dec. 31, 2025 USD ($) | Jan. 22, 2025 EUR (€) | Apr. 22, 2020 USD ($)
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Guaranty amount |  |  |  |  |  |  |  |  | $ 5,000,000.0
Amounts paid under the guaranty |  |  |  |  |  |  | $ 0 |  |
Principal outstanding under the guaranty |  | $ 0 |  | $ 0 |  |  | $ 0 |  |
Number of agreements to purchase in-process research and development | agreement |  |  |  |  |  | 2 |  |  |
License agreement, transfer fee | $ 500,000 |  |  |  |  |  |  |  |
License agreement, upfront fee | $ 500,000 |  |  |  |  |  |  |  |
Payments for royalties |  |  |  | 0 |  |  |  |  |
Research and development |  | $ 5,340,000 | $ 5,978,000 | 25,025,000 |  |  |  |  |
Framework Agreement Third Party |  |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |
Research services, minimum fee due in first 12-month period | € |  |  |  |  |  |  |  | € 2.0 |
Research services, minimum fee due in second 12-month period | € |  |  |  |  |  |  |  | € 3.0 |
Research and development |  |  |  | 1,900,000 | € 1.7 |  |  |  |
Payments for research and development |  |  |  | $ 2,000,000.0 |  |  |  |  |

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