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v3.23.3

Notes Payable (Schedule of Long-term Debt) (Details) |  | 9 Months Ended | 11 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 18, 2022 USD ($) | Sep. 30, 2023 USD ($) | Oct. 26, 2023 USD ($) | Dec. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Mar. 08, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate |  |  |  |  |  | 4.40%
Total principal amount |  | $ 575,000,000 |  | $ 400,000,000 |  |
Less unamortized discount and debt issuance costs |  | 1,371,000 |  | 1,670,000 |  |
Notes payable |  | 573,629,000 |  | 398,330,000 |  |
Debt issuance cost |  |  |  |  |  | $ 3,400,000
Debt instrument, discount percent |  |  |  |  |  | 99.847%
Effective interest rate |  |  |  |  |  | 4.45%
Unamortized debt issuance cost |  | 700,000 |  |  |  |
Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Loan maximum borrowing capacity | $ 200,000,000 |  |  |  | $ 75,000,000 |
Drawn down amount under credit facility |  | 200,000,000 |  | 25,000,000 |  |
Unsecured Notes Two | Revolving Credit Facility | Consolidated Insurance Subsidiary |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Drawn down amount under credit facility contributed |  | 150,000,000 |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Subsequent Event |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Effective interest rate |  |  | 6.75% |  |  |
Drawn down amount under credit facility |  |  | $ 200,000,000 |  |  |
Remaining amount available to be drawn |  |  | $ 0 |  |  |
Unsecured debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notes payable |  | $ 373,629,000 |  | 373,330,000 |  |
Unsecured debt | Notes payable | Level 2 | Unsecured Notes One |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate |  | 4.40% |  |  |  |
Unsecured debt |  | $ 375,000,000 |  | 375,000,000 |  | $ 375,000,000
Unsecured debt | Notes payable | Level 2 | Unsecured Notes Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Unsecured debt |  |  |  | $ 25,000,000 |  |
Minimum | Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitment fee on undrawn portion of facility | 0.125% | 0.175% |  |  |  |
Maximum | Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt to total capital ratio |  | 0.295 |  |  |  |
Commitment fee on undrawn portion of facility | 0.225% |  |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum | Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.125% |  |  |  |
Debt to total capital ratio | 0.20 |  |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum | Unsecured debt | Notes payable | Level 2 | Unsecured Notes Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.125% |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum | Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt to total capital ratio | 0.30 |  |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum | Unsecured debt | Notes payable | Level 2 | Unsecured Notes Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.50% |  |  |  |

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