Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Estimable Useful Lives) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 52,760	$ 52,140
Accumulated Amortization	(40,475)	(39,866)
Valuation Allowance	0	(304)
Net Amount	12,285	11,970
Core Deposit Premium
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,270	31,270
Accumulated Amortization	(30,345)	(30,266)
Valuation Allowance	0	0
Net Amount	925	1,004
Mortgage Servicing Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,490	20,870
Accumulated Amortization	(10,130)	(9,600)
Valuation Allowance	0	(304)
Net Amount	$ 11,360	$ 10,966