Goodwill And Other Intangible Assets (Summary Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Identifiable intangible assets [Abstract]
Gross carrying amount	$ 15,650	$ 14,727
Less: accumulated amortization	6,022	4,363
Net carrying amount	$ 9,628	$ 10,364