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Loans (Schedule of Composition of Loans) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans $ 516,942 $ 495,573 $ 469,820
Less: Allowance for loan losses 4,505 4,959  
Net Loans 512,437 490,614  
Construction and land development [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 23,266 35,019  
Secured by farmland [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 8,525 6,550  
Secured by 1-4 family residential properties [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 227,966 229,651  
Multifamily [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 3,566 3,975  
Commercial [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 208,525 175,172 $ 161,299
Loans to farmers [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 1,338 1,331  
Commercial and industrial loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 30,341 29,366  
Consumer installment loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans 12,677 13,530  
All other loans [Member]      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Loans $ 738 $ 979