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Reinsurance - Schedule of Paid and Unpaid Losses and Loss Adjustment Expenses Recoverable (Details) - Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments - Reinsurer Concentration Risk | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Ceded Credit Risk [Line Items] |  |
% of total paid and unpaid losses and loss adjustment expenses recoverable | 100.00% | 100.00%
A- or better |  |
Ceded Credit Risk [Line Items] |  |
% of total paid and unpaid losses and loss adjustment expenses recoverable | 74.90% | 71.00%
Below A- |  |
Ceded Credit Risk [Line Items] |  |
% of total paid and unpaid losses and loss adjustment expenses recoverable | 0.20% | 0.50%
Collateralized |  |
Ceded Credit Risk [Line Items] |  |
% of total paid and unpaid losses and loss adjustment expenses recoverable | 24.90% | 28.50%

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