Deferred Policy Acquisition Costs, Deferred Reinsurance Losses, Deferred Reinsurance Gains And Deferred Sales Inducements (Balance of and Changes in DSI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Movement in Deferred Sales Inducements [Roll Forward]
Balance, beginning of period	$ 351,424
Balance, end of period	344,893
Variable Annuities
Movement in Deferred Sales Inducements [Roll Forward]
Balance, beginning of period	351,424	$ 381,504
Capitalization	1,253	1,540
Amortization expense	(7,784)	(8,218)
Balance, end of period	$ 344,893	$ 374,826