Income Taxes (Schedule Of Components Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U.S. federal, Current	$ 124,787	$ 96,849	$ 104,924
State and local, Current	17,161	13,793	15,174
Current, income tax expense (benefit)	141,948	110,642	120,098
U.S. federal, Deferred	(6,228)	19,990	22,184
State and local, Deferred	(1,171)	1,726	3,429
Deferred, income tax expense (benefit)	(7,399)	21,716	25,613
U.S. federal, Total	118,559	116,839	127,108
State and local, Total	15,990	15,519	18,603
Total income tax expense	$ 134,549	$ 132,358	$ 145,711