Derivative Financial Instruments (Schedule Of Derivative Gains And Losses In The Consolidated Statements Of Operations) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gains Recognized in Income	$ 3,045	$ 22,306	$ 7,378
Total Return Swap | Net realized investment gains
Derivative [Line Items]
Gains Recognized in Income	0	0	1,039
Options sold | Net realized investment gains
Derivative [Line Items]
Gains Recognized in Income	$ 3,045	$ 22,306	$ 6,339