Other Comprehensive Income (Loss) (Summary Of Accumulated Other Comprehensive Income, Net Of Tax) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Comprehensive Income (Loss) [Abstract]
Beginning Balance	$ 907	$ 2,937	$ 2,765	$ 1,340	$ 2,937	$ 1,340
Other comprehensive income before reclassifications	105		326		(1,906)	1,751
Amounts reclassified from accumulated other comprehensive income			(101)		(19)	(101)
Other comprehensive (loss) income, net of tax	105	(2,030)	225	1,425	(1,925)	1,650
Ending Balance	$ 1,012	$ 907	$ 2,990	$ 2,765	$ 1,012	$ 2,990