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Condensed Financial Information of Registrant Condensed Financial Information of Registrant (Narratives) (Details) |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 11, 2025 USD ($) | Nov. 22, 2024 | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Nov. 30, 2023 USD ($) | Nov. 18, 2022 USD ($) | Mar. 31, 2021 USD ($) | Mar. 08, 2017 USD ($)
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Capital distribution from subsidiaries |  |  | $ 300,000 | $ 6,200,000 | $ 2,900,000 |  |  |  |
Proceeds from dividends received |  |  | 100,000,000 | 0 | 0 |  |  |  |
Payments for contributions to subsidiaries |  |  |  |  | 0 |  |  |  |
Unsecured Notes One | Level 2 | Notes payable | Unsecured notes |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Unsecured debt |  |  | $ 375,000,000 | 375,000,000 |  |  |  |  | $ 375,000,000
Interest rate (in percent) |  |  | 4.40% |  |  |  |  |  | 4.40%
Debt issuance costs |  |  |  |  |  |  |  |  | $ 3,400,000
Discount percent |  |  |  |  |  |  |  |  | 99.847%
Interest rate, effective percentage |  |  |  |  |  |  |  |  | 4.45%
Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 250,000,000 | $ 200,000,000 | $ 75,000,000 |
Drawn down amount under credit facility |  |  | $ 200,000,000 | 200,000,000 |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Consolidated Insurance Subsidiary |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Drawn down amount under credit facility contributed |  |  | $ 150,000,000 |  |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Subsequent Event |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Interest rate, effective percentage | 5.79% |  |  |  |  |  |  |  |
Drawn down amount under credit facility | $ 200,000,000 |  |  |  |  |  |  |  |
Undrawn portion of credit facility | $ 50,000,000 |  |  |  |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Debt to total capital ratio |  | 0.20 |  |  |  |  |  |  |
Commitment fee on undrawn portion of facility |  | 0.125% | 0.15% |  |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Debt to total capital ratio |  | 0.30 | 0.228 |  |  |  |  |  |
Commitment fee on undrawn portion of facility |  | 0.225% |  |  |  |  |  |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured notes |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Unsecured debt |  |  | $ 200,000,000 | 200,000,000 |  |  |  |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured notes | Minimum |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.125% |  |  |  |  |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured notes | Maximum |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.50% |  |  |  |  |  |
Parent Company |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |
Capital distribution from subsidiaries |  |  | $ 0 | 0 | 3,431,433 |  |  |  |
Payments for contributions to subsidiaries |  |  | $ 165,000 | $ 150,000,000 | $ 0 |  |  |  |

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