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Reinsurance - Excess of Loss Reinsurance (Details) $ in Thousands |  |  |  |  |  |  |  |  |  | 12 Months Ended
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Oct. 23, 2023 USD ($) | Apr. 01, 2023 USD ($) | Apr. 26, 2022 USD ($) | Apr. 01, 2022 USD ($) | Aug. 03, 2021 USD ($) | Feb. 02, 2021 USD ($) | Oct. 29, 2020 USD ($) | May 25, 2019 USD ($) | Oct. 30, 2018 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
2023 Traditional XOL |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amortization period excess of loss reinsurance coverage |  | 10 years |  |  |  |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  | $ 70,578 |  |  |  |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 70,578 |  |
Remaining Excess of Loss Reinsurance Coverage (1) |  | $ 96,942 |  |  |  |  |  |  |  | 96,942 |  |
2022 Traditional XOL |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Amortization period excess of loss reinsurance coverage |  |  |  | 10 years |  |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  | $ 82,523 |  |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | 82,346 | $ 82,517 |
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  | $ 142,642 |  |  |  |  |  | 142,642 | 142,642 |
Home Re 2023-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity | 10 years |  |  |  |  |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained | $ 272,961 |  |  |  |  |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | 272,961 |  |
Remaining Excess of Loss Reinsurance Coverage (1) | $ 330,277 |  |  |  |  |  |  |  |  | $ 330,277 |  |
Reinsurance Retention Policy, Funding Percentage | 0.97 |  |  |  |  |  |  |  |  | 0.97 |  |
Home Re 2022-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  | 12 years 6 months |  |  |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  | $ 325,589 |  |  |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 325,001 | 325,576 |
Remaining Excess of Loss Reinsurance Coverage (1) |  |  | $ 473,575 |  |  |  |  |  |  | $ 420,731 | 473,575 |
Reinsurance Retention Policy, Funding Percentage |  |  | 1 |  |  |  |  |  |  | 1 |  |
Home Re 2021-2 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  |  |  | 12 years 6 months |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  |  | $ 190,159 |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 189,403 | 190,097 | $ 190,159
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  |  | $ 398,429 |  |  |  |  | $ 173,960 | 352,084 | 398,429
Reinsurance Retention Policy, Funding Percentage |  |  |  |  | 1 |  |  |  |  | 0.68 |  |
Home Re 2021-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  |  |  |  | 12 years 6 months |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  |  |  | $ 211,159 |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 210,831 | 211,102 | 211,142
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  |  |  | $ 398,848 |  |  |  | $ 117,982 | 277,053 | 387,830
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  | 1 |  |  |  | 0.65 |  |
Home Re 2020-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  |  |  |  |  | 10 years |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  |  |  |  | $ 275,283 |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 261,280 | 275,051 | 275,204
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  |  |  |  | $ 412,917 |  |  | $ 41,846 | 113,247 | 234,312
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  |  | 1 |  |  | 1 |  |
Home Re 2019-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  |  |  |  |  |  | 10 years |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  |  |  |  |  | $ 185,730 |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 182,722 | 183,540 | 183,917
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  |  |  |  |  | $ 315,739 |  | $ 21,039 | 208,146 | 208,146
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  |  |  | 1 |  | 0.10 |  |
Home Re 2018-1 |  |  |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Legal Maturity |  |  |  |  |  |  |  |  | 10 years |  |  |
Reinsurance Retention Policy, Initial Amount Retained |  |  |  |  |  |  |  |  | $ 168,691 |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  |  |  | $ 164,335 | 164,849 | 165,365
Remaining Excess of Loss Reinsurance Coverage (1) |  |  |  |  |  |  |  |  | $ 318,636 | $ 69,762 | $ 140,993 | $ 218,343
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  |  |  |  | 1 | 1 |  |

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