Income Taxes (Components Of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Federal
Current	$ (62,355)	$ 37,391	$ 69,554
Deferred	(93,562)	11,349	12,340
Total	(155,917)	48,740	81,894
State
Current	784	1,542	1,172
Deferred	(2,910)	1,088	828
Total	(2,126)	2,630	2,000
Current	(61,571)	38,933	70,726
Deferred	(96,472)	12,437	13,168
Income tax (benefit) expense	$ (158,043)	$ 51,370	$ 83,894