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Reinsurance - Schedule of Disaggregation of Reinsurance Recoverable by Financial Strength Rating and Aging Analysis (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | $ 926,944 | $ 1,063,145 |  |
Less: allowance for credit losses | (2,000) | (2,000) | $ (1,700) | $ (1,700)
Total reinsurance recoverable, net | 924,944 | 1,061,145 |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Gross | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 920,099 | 1,056,738 |  |
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Gross | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 6,845 | 6,407 |  |
Federal and state pools |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 184,555 | 318,785 |  |
Federal and state pools | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 184,555 | 318,785 |  |
Federal and state pools | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 0 | 0 |  |
Other than federal and state pools |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 8,195 | 6,656 |  |
Other than federal and state pools | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 8,192 | 6,647 |  |
Other than federal and state pools | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 3 | 9 |  |
Total non-rated reinsurers |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 192,750 | 325,441 |  |
Total non-rated reinsurers | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 192,747 | 325,432 |  |
Total non-rated reinsurers | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 3 | 9 |  |
A++ |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 114,987 | 111,706 |  |
A++ | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 114,152 | 111,481 |  |
A++ | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 835 | 225 |  |
A+ |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 479,350 | 488,522 |  |
A+ | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 475,469 | 483,317 |  |
A+ | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 3,881 | 5,205 |  |
A |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 133,724 | 131,906 |  |
A | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 131,695 | 131,087 |  |
A | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 2,029 | 819 |  |
A- |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 6,133 | 5,570 |  |
A- | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 6,036 | 5,421 |  |
A- | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 97 | 149 |  |
Total rated reinsurers |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 734,194 | 737,704 |  |
Total rated reinsurers | Current |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | 727,352 | 731,306 |  |
Total rated reinsurers | Past Due |  |  |  |
Reinsurance Recoverable, Credit Quality Indicator [Line Items] |  |  |  |
Total reinsurance recoverable, gross | $ 6,842 | $ 6,398 |  |

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