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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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Derivative [Line Items]        
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net realized investment (losses) gains Net realized investment (losses) gains Net realized investment (losses) gains Net realized investment (losses) gains
Derivatives Not Designated as Hedging Instrument        
Derivative [Line Items]        
Gains Recognized in Net Loss $ 1,596 $ 1,404 $ 2,824 $ 2,628
Derivatives Not Designated as Hedging Instrument | Options sold        
Derivative [Line Items]        
Gains Recognized in Net Loss $ 1,596 $ 1,404 $ 2,824 $ 2,628