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Reinsurance - Excess of Loss Reinsurance (Details) $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended
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Apr. 01, 2024 USD ($) | Oct. 23, 2023 USD ($) | Apr. 01, 2023 USD ($) | Apr. 26, 2022 USD ($) | Apr. 01, 2022 USD ($) | Aug. 03, 2021 USD ($) | Feb. 02, 2021 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
2024 Traditional XOL |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization period excess of loss reinsurance coverage | 10 years |  |  |  |  |  |  |  |  |
Reinsurance Retention Policy, Initial Amount Retained | $ 125,016 |  |  |  |  |  |  |  |  |
Remaining First Layer Retention |  |  |  |  |  |  |  | $ 125,016 |  |
Remaining Excess of Loss Reinsurance Coverage | $ 187,220 |  |  |  |  |  |  | 187,220 |  |
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 |  |  |  |  |  |  |  | 70,401 | $ 70,578 |
Remaining Excess of Loss Reinsurance Coverage |  |  | $ 96,942 |  |  |  |  | 91,404 | 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 |  |  |  |  |  |  |  | 81,112 | 82,346 | $ 82,517
Remaining Excess of Loss Reinsurance Coverage |  |  |  |  | $ 142,642 |  |  | $ 124,344 | 142,642 | 142,642
Excess of Loss Reinsurance Transactions, Home Re Transactions |  |  |  |  |  |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |  |  |  |  |  |
Reinsurance Agreement, Optional Right, Percent Of Reinsurance Coverage Threshold |  |  |  |  |  |  |  | 10.00% |  |
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 |  |  |  |  |  |  |  | $ 272,269 | 272,961 |
Remaining Excess of Loss Reinsurance Coverage |  | $ 330,277 |  |  |  |  |  | $ 299,325 | 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 |  |  |  |  |  |  |  | $ 322,566 | 325,001 | 325,576
Remaining Excess of Loss Reinsurance Coverage |  |  |  | $ 473,575 |  |  |  | $ 305,639 | 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 |  |  |  |  |  |  |  | $ 188,211 | 189,403 | 190,097
Remaining Excess of Loss Reinsurance Coverage |  |  |  |  |  | $ 398,429 |  | $ 132,424 | 173,960 | 352,084
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  | 1 |  | 0.85 |  |
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 |  |  |  |  |  |  |  | $ 210,027 | 210,831 | 211,102
Remaining Excess of Loss Reinsurance Coverage |  |  |  |  |  |  | $ 398,848 | $ 92,019 | $ 117,982 | $ 277,053
Reinsurance Retention Policy, Funding Percentage |  |  |  |  |  |  | 1 | 1 |  |

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- Definition Amount per life of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
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