Condensed Financial Information of Registrant (Schedule Of Condensed Financial Information Of Registrant, Statements Of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Net investment income	$ 234,630	$ 168,356	$ 129,727
Net realized investment gains (losses)	101,014	(488,080)	111,658
Total revenues	4,629,631	3,643,066	3,993,357
Expenses:
Other operating expenses	279,656	279,718	283,397
Interest	24,169	17,232	17,113
Total expenses	4,530,203	4,313,781	3,694,050
Income tax (benefit) expense	3,092	(158,043)	51,370
Net income (loss)	96,336	(512,672)	247,937
Parent Company
Revenues:
Net investment income	2,998	2,696	2,560
Net realized investment gains (losses)	1,431	(12,969)	26,523
Total revenues	4,429	(10,273)	29,083
Expenses:
Other operating expenses	2,526	2,446	2,627
Interest	24,129	17,178	17,088
Total expenses	26,655	19,624	19,715
(Loss) income before income taxes and equity in net income (loss) of subsidiaries	(22,226)	(29,897)	9,368
Income tax (benefit) expense	(4,379)	(10,234)	4,930
(Loss) income before equity in net income (loss) of subsidiaries	(17,847)	(19,663)	4,438
Equity in net income (loss) of subsidiaries	114,183	(493,009)	243,499
Net income (loss)	$ 96,336	$ (512,672)	$ 247,937