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Loss And Loss Adjustment Expense Reserves (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Unusual or Infrequent Item, or Both [Line Items]    
Prior year claims and claims adjustment expense $ (5,845) $ (15,484)
Catastrophe    
Unusual or Infrequent Item, or Both [Line Items]    
Liability for catastrophe claims, carrying amount 72,000 $ 98,000
Adjustments for prior year claims $ (4,000)