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	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 292,892	$ 333,002
Amortization expense	(9,990)	(10,214)
Balance, end of period	282,902	322,788
Variable Annuities
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	223,515	254,577
Amortization expense	(7,828)	(7,902)
Balance, end of period	215,687	246,675
Term Life
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	69,377	78,425
Amortization expense	(2,162)	(2,312)
Balance, end of period	$ 67,215	$ 76,113