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Loans (Schedule of Composition of Loans) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans $ 569,238 $ 517,125 $ 495,676
Net deferred loan fees (421) (183)  
Less: Allowance for loan losses (4,411) (4,505)  
Net Loans 564,406 512,437  
Construction and land development [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 43,786 23,266  
Secured by farmland [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 8,568 8,525  
Secured by 1-4 family residential properties [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 223,210 227,966  
Multifamily [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 4,095 3,566  
Commercial [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 239,915 208,525 $ 175,172
Commercial and industrial loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 37,427 30,341  
Consumer installment loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 10,187 12,677  
All other loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans $ 2,050 $ 2,259