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Medical Expenses Payable - Schedule of Medical Expenses Payable (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023
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Insurance [Abstract] |  |  |  |
Claims incurred but not paid | $ 298,176 | $ 168,357 | $ 158,174 | $ 95,664
Capitation and risk-sharing payable | 74,541 | 52,016 |  |
Other | 156,079 | 69,415 |  |
Medical expenses payable | $ 528,796 | $ 289,788 | $ 297,125 |

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