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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
Sep. 30, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment $ 1,221 $ 1,247
Loans acquired with deteriorated credit quality 925 1,174
Collectively evaluated for impairment 817,133 761,914
Total Loans 819,279 764,335
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 658 833
Collectively evaluated for impairment 233,087 234,903
Total Loans 233,768 235,759
Commercial Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Individually evaluated for impairment 1,198 1,224
Loans acquired with deteriorated credit quality 267 341
Collectively evaluated for impairment 361,893 341,369
Total Loans 363,358 342,934
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 16,217 17,228
Total Loans 16,217 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 104,868 97,461
Total Loans 104,868 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 101,068 70,953
Total Loans $ 101,068 $ 70,953