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v3.23.1

Notes Payable (Narrative) (Details) $ in Thousands |  | 3 Months Ended | 5 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 18, 2022 USD ($) | Mar. 31, 2023 USD ($) | Apr. 27, 2023 USD ($) | Dec. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Mar. 08, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate |  |  |  |  |  | 4.40%
Debt issuance cost |  |  |  |  |  | $ 3,400
Debt instrument, discount percent |  |  |  |  |  | 99.847%
Effective interest rate |  |  |  |  |  | 4.45%
Unamortized debt issuance cost |  | $ 800 |  |  |  |
Unsecured Notes One | Level 2 | Notes payable | Unsecured debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Unsecured debt |  | $ 375,000 |  | $ 375,000 |  | $ 375,000
Interest rate |  | 4.40% |  |  |  |
Unsecured Notes Two | Revolving Credit Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 200,000 |  |  |  | $ 75,000 |
Undrawn portion of credit facility |  | $ 125,000 |  |  |  |
Drawn down amount under credit facility |  | 75,000 |  | 25,000 |  |
Unsecured Notes Two | Revolving Credit Facility | Consolidated Insurance Subsidiary |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Drawn down amount under credit facility contributed |  | $ 50,000 |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Subsequent Event |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Effective interest rate |  |  | 6.28% |  |  |
Drawn down amount under credit facility |  |  | $ 75,000 |  |  |
Unsecured Notes Two | Revolving Credit Facility | Minimum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Commitment fee on undrawn portion of facility | 0.125% | 0.15% |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Minimum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.125% |  |  |  |
Debt to total capital ratio | 0.20 |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Maximum |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt to total capital ratio |  | 0.236 |  |  |  |
Commitment fee on undrawn portion of facility | 0.225% |  |  |  |  |
Unsecured Notes Two | Revolving Credit Facility | Maximum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt to total capital ratio | 0.30 |  |  |  |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Unsecured debt |  | $ 75,000 |  | $ 25,000 |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured debt | Minimum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.125% |  |  |  |
Unsecured Notes Two | Level 2 | Notes payable | Unsecured debt | Maximum | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  | 1.50% |  |  |  |

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