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Loss And Loss Adjustment Expense Reserves (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jul. 16, 2025
Unusual or Infrequent Item, or Both [Line Items] |  |  |
Prior years | $ (46,896) | $ 7,978 |
Liability for catastrophe claims, carrying amount | 460,000 | 197,000 |
Fire |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |
Subrogation recorded | 575,000 |  |
Net losses and loss adjustment expenses on Eaton and Palisades fires | 359,000 |  |
Amount paid out for claims | 1,320,000 |  |
Amount billed to reinsurers | $ 933,000 |  |
Percent of collections from reinsurers | 100.00% |  |
Reinstatement premium | $ 101,000 |  |
Fire | Subsequent Event |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |
Amount billed to reinsurers |  |  | $ 225,000
Catastrophe |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |
Adjustments for prior year claims | $ (14,000) | $ 9,000 |

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- Definition The amount of estimated liability as of the balance sheet date for the specific conflagration, earthquake, windstorm, explosion, or similar event. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.W.Q2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479583/944-40-S99-1 + Details
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