Risks and Uncertainties (Summary Of Loans That Remain In Forbearance) (Details) $ in Thousands	Mar. 31, 2021 USD ($) loan
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	111
Loans Remaining In Forbearance | $	$ 41,791
Residential Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	8
Loans Remaining In Forbearance | $	$ 1,234
Commercial Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	47
Loans Remaining In Forbearance | $	$ 31,080
Agricultural Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	2
Loans Remaining In Forbearance | $	$ 428
Construction Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	3
Loans Remaining In Forbearance | $	$ 7,240
Commercial, Financial And Agricultural [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	35
Loans Remaining In Forbearance | $	$ 1,560
Consumer Loans To Individuals [Member]
Risks And Uncertainties [Line Items]
Number Of Remaining Loans In Forbearance | loan	16
Loans Remaining In Forbearance | $	$ 249