Income Taxes (Schedule Of Components Of The Income Taxes (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Current tax provision: Federal									$ 14,407	$ 11,038	$ 1,044
Current tax provision: State									5,212	5,379	1,213
Current tax provision									19,619	16,417	2,257
Deferred tax provision (benefit): Federal									1,382	13,926	22,599
Deferred tax provision (benefit): State									225	1,898	(1,800)
Deferred tax provision (benefit)									1,607	15,824	20,799
Income Tax Expense (Benefit), Total	$ 3,641	$ 7,975	$ 3,575	$ 6,035	$ 2,691	$ 21,942	$ 2,209	$ 5,399	$ 21,226	$ 32,241	$ 23,056