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Restricted Available-for-Sale Investments - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Accrued interest receivable | $ 38 |  | $ 38 |  | $ 13
Debt securities available for sale accrued interest after allowance for credit loss statement of financial position extensible list not disclosed flag |  |  | true |  | true
Restricted Investments |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Gross realized gains or losses | $ 0 | $ 0 | $ 0 | $ 0 |

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