Risks and Uncertainties (Summary of Loan Forbearance) (Details) - Subsequent Event [Member] $ in Thousands	Apr. 30, 2020 USD ($) loan
Risks And Uncertainties [Line Items]
Number of Loans | loan	754
Balance | $	$ 165,360
Residential Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number of Loans | loan	152
Balance | $	$ 10,359
Commercial Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number of Loans | loan	167
Balance | $	$ 129,851
Construction Real Estate Loans [Member]
Risks And Uncertainties [Line Items]
Number of Loans | loan	14
Balance | $	$ 5,005
Commercial, Financial And Agricultural [Member]
Risks And Uncertainties [Line Items]
Number of Loans | loan	60
Balance | $	$ 11,797
Consumer Loans To Individuals [Member]
Risks And Uncertainties [Line Items]
Number of Loans | loan	361
Balance | $	$ 8,348