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Related-Party Transactions (Details) - Consultants and vendors - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Related-Party Transactions |  |  |
Net costs | $ 1,141 | $ 1,868 | $ 1,961
Accounts payable |  |  |
Related-Party Transactions |  |  |
Due to related party | $ 1 | $ 13 |

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