Condensed Financial Information of Registrant (Schedule Of Condensed Financial Information Of Registrant, Statements Of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Net investment income	$ 168,356	$ 129,727	$ 134,858
Net realized investment (losses) gains	(488,080)	111,658	85,731
Total revenues	3,643,066	3,993,357	3,784,511
Expenses:
Other operating expenses	279,718	283,397	285,831
Interest	17,232	17,113	17,048
Total expenses	4,313,781	3,694,050	3,326,010
(Loss) income before income taxes	(670,715)	299,307	458,501
Income tax (benefit) expense	(158,043)	51,370	83,894
Net (loss) income	(512,672)	247,937	374,607
Parent Company
Revenues:
Net investment income	2,696	2,560	3,323
Net realized investment (losses) gains	(12,969)	26,523	9,575
Total revenues	(10,273)	29,083	12,898
Expenses:
Other operating expenses	2,446	2,627	3,054
Interest	17,178	17,088	17,035
Total expenses	19,624	19,715	20,089
(Loss) income before income taxes	(29,897)	9,368	(7,191)
Income tax (benefit) expense	(10,234)	4,930	600
(Loss) income before equity in net (loss) income of subsidiaries	(19,663)	4,438	(7,791)
Equity in net (loss) income of subsidiaries	(493,009)	243,499	382,398
Net (loss) income	$ (512,672)	$ 247,937	$ 374,607