Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Federal: Current	$ 6,856	$ 8,170	$ 21,594
Federal: Deferred	(3,528)	2,081	927
Federal	3,328	10,251	22,521
State and Other: Current	1,456	2,522	4,857
State and Other: Deferred	(1,572)	(633)	1,163
State and Other	(116)	1,889	6,020
Income Tax Expense (Benefit), Total	$ 3,212	$ 12,140	$ 28,541