Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Estimable Useful Lives) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 53,457	$ 52,140
Accumulated Amortization	(41,823)	(39,866)
Valuation allowance	0	(304)
Finite-Lived Intangible Assets, Net, Total	11,634	11,970
Core Deposit Premium [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,270	31,270
Accumulated Amortization	(30,565)	(30,266)
Valuation allowance	0	0
Finite-Lived Intangible Assets, Net, Total	705	1,004
Mortgage Servicing Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,187	20,870
Accumulated Amortization	(11,258)	(9,600)
Valuation allowance	0	(304)
Finite-Lived Intangible Assets, Net, Total	$ 10,929	$ 10,966