Deferred Policy Acquisition Costs, Deferred Reinsurance Losses, Deferred Reinsurance Gains And Deferred Sales Inducements (Balance of and Changes in Deferred Reinsurance Losses) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 292,893	$ 333,003
Amortization expense	(19,393)	(19,995)
Balance, end of period	273,500	313,008
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	223,515	254,577
Amortization expense	(15,113)	(15,399)
Balance, end of period	208,402	239,178
Term Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	69,378	78,426
Amortization expense	(4,280)	(4,596)
Balance, end of period	$ 65,098	$ 73,830