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Basis of Presentation and Summary of Significant Accounting Policies - Reinsurance (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Reinsurance |  |
Amount of allowance for uncollectible amounts on paid recoverables | $ 17,000 | $ 17,000
Reinsurance balances recoverable on unpaid losses and settlement expenses, allowances for uncollectible amounts | 11,479 | $ 11,107
Financing receivable, allowance for credit Loss, write-off | $ 0 |
Common stock |  |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Maximum |  |
Reinsurance |  |
Financing receivable, allowance for credit loss, recovery | $ 1,000 |

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