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Loss And Loss Adjustment Expense Reserves (Schedule Of Impact Of Catastrophe Reinsurance Utilization On Ceded Premiums Written And Earned Compared To Pro-Forma) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Effects of Reinsurance [Line Items] |  |  |  |  |
Ceded premiums earned | $ 54,400 |  | $ 31,400 | $ 161,100 | $ 62,500
Reinsurance Contract [Axis]: 100% Reinsurance Limit Used |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |
Ceded premiums written | 0 | $ 52,000 |  | 52,000 |
Ceded premiums earned | 0 | 52,000 |  | 52,000 |
Reinstatement premiums written | 0 | 101,000 |  | 101,000 |
Total ceded premiums written | 0 | 153,000 |  | 153,000 |
Reinstatement premiums earned | 51,000 | 50,000 |  | 101,000 |
Total ceded premiums earned | 51,000 | 102,000 |  | 153,000 |
Reinsurance Contract [Axis]: Pro-Forma, $0 Reinsurance Limit |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |
Ceded premiums written | 26,000 | 26,000 |  | 52,000 |
Ceded premiums earned | 26,000 | 26,000 |  | 52,000 |
Reinsurance Contract [Axis]: Pro-Forma, $0 Reinsurance Limit And 100% Reinsurance Limit Used, Difference |  |  |  |  |
Effects of Reinsurance [Line Items] |  |  |  |  |
Ceded premiums written | (26,000) | 127,000 |  | 101,000 |
Ceded premiums earned | $ 25,000 | $ 76,000 |  | $ 101,000 |

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