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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, 2017
Dec. 31, 2016
Jul. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Individually evaluated for impairment $ 1,405 $ 2,624  
Loans acquired with deteriorated credit quality 1,256 1,386 $ 1,368
Collectively evaluated for impairment 753,606 710,095  
Total Loans 756,267 714,105  
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 831 821  
Collectively evaluated for impairment 234,654 236,333  
Total Loans 235,508 237,177  
Commercial Real Estate Loans [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Individually evaluated for impairment 1,382 2,601  
Loans acquired with deteriorated credit quality 425 565  
Collectively evaluated for impairment 343,153 317,021  
Total Loans 344,960 320,187  
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 15,328 19,709  
Total Loans 15,328 19,709  
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 92,979 85,508  
Total Loans 92,979 85,508  
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 67,492 51,524  
Total Loans $ 67,492 $ 51,524