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Loans Receivable and Allowance for Loan Losses (Summary Of Amount Of Loans In Each Category That Were Individually And Collectively Evaluated For Impairment) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment $ 1,238 $ 1,247
Loans acquired with deteriorated credit quality 1,157 1,174
Collectively evaluated for impairment 773,518 761,914
Total Loans 775,913 764,335
Residential Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 23 23
Loans acquired with deteriorated credit quality 823 833
Collectively evaluated for impairment 231,925 234,903
Total Loans 232,771 235,759
Commercial Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 1,215 1,224
Loans acquired with deteriorated credit quality 334 341
Collectively evaluated for impairment 346,958 341,369
Total Loans 348,507 342,934
Construction Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 0 0
Loans acquired with deteriorated credit quality 0 0
Collectively evaluated for impairment 17,831 17,228
Total Loans 17,831 17,228
Commercial, Financial And Agricultural [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 0 0
Loans acquired with deteriorated credit quality 0 0
Collectively evaluated for impairment 100,840 97,461
Total Loans 100,840 97,461
Consumer Loans To Individuals [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 0 0
Loans acquired with deteriorated credit quality 0 0
Collectively evaluated for impairment 75,964 70,953
Total Loans $ 75,964 $ 70,953