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Goodwill And Other Intangible Assets (Summary Of Other Intangible Assets) (Details) - Community Banking [Member] - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Goodwill [Line Items]    
Identifiable intangible assets, Gross carrying amount $ 15,650 $ 15,650
Identifiable intangible assets, Less: accumulated amortization (6,427) (6,022)
Identifiable intangible assets, Net carrying amount $ 9,223 $ 9,628