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Derivative Financial Instruments (Schedule Of Derivative Gains And Losses In The Consolidated Statements Of Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Derivative [Line Items]    
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized investment gains (losses) Net realized investment gains (losses)
Derivatives Not Designated as Hedging Instrument    
Derivative [Line Items]    
Gains Recognized in Net Income $ 1,228 $ 1,225
Derivatives Not Designated as Hedging Instrument | Options sold    
Derivative [Line Items]    
Gains Recognized in Net Income $ 1,228 $ 1,225