Income Taxes (Schedule Of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Federal	$ 51,741	$ 9,113	$ 27,815
State and local	14,203	7,354	8,415
Total current	65,944	16,467	36,230
Federal	(1,375)	2,528	(3,182)
State and local	(486)	646	(973)
Total deferred	(1,861)	3,174	(4,155)
Income tax expense	$ 64,083	$ 19,641	$ 32,075