Loans And The Allowance For Credit Losses (Allowance For Loan Losses And The Recorded Investment In Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment $ 112 $ 569    
Ending balance collectively evaluated for impairment 12,716 11,743    
Financing receivables, Ending balance individually evaluated for impairment 906 3,022    
Financing receivables, Ending balance collectively evaluated for impairment 1,165,327 1,079,901    
Total 1,166,233 1,082,923    
Allowance for loan losses 12,042 11,562    
Reserve for undisbursed lines of credit 786 750    
Total allowance for credit losses 12,828 12,312 11,353 10,754
Commercial, Financial And Agricultural [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 2 149    
Ending balance collectively evaluated for impairment 3,352 3,298    
Financing receivables, Ending balance individually evaluated for impairment 20 233    
Financing receivables, Ending balance collectively evaluated for impairment 172,790 164,790    
Total 172,810 165,023    
Allowance for loan losses 2,740 2,915    
Reserve for undisbursed lines of credit 614 532    
Total allowance for credit losses 3,354 3,447 2,905 2,617
Municipal Loans [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 0 0    
Ending balance collectively evaluated for impairment 768 522    
Financing receivables, Ending balance individually evaluated for impairment 0 0    
Financing receivables, Ending balance collectively evaluated for impairment 94,007 84,689    
Total 94,007 84,689    
Allowance for loan losses 758 494    
Reserve for undisbursed lines of credit 10 28    
Total allowance for credit losses 768 522 309 236
Real Estate Loans – Residential [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 41 361    
Ending balance collectively evaluated for impairment 3,040 3,060    
Financing receivables, Ending balance individually evaluated for impairment 722 2,317    
Financing receivables, Ending balance collectively evaluated for impairment 488,984 458,078    
Total 489,706 460,395    
Allowance for loan losses 2,995 3,333    
Reserve for undisbursed lines of credit 86 88    
Total allowance for credit losses 3,081 3,421 3,017 2,305
Real Estate Loans – Commercial [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 69 59    
Ending balance collectively evaluated for impairment 5,016 4,601    
Financing receivables, Ending balance individually evaluated for impairment 164 472    
Financing receivables, Ending balance collectively evaluated for impairment 371,155 356,706    
Total 371,319 357,178    
Allowance for loan losses 5,040 4,605    
Reserve for undisbursed lines of credit 45 55    
Total allowance for credit losses 5,085 4,660 4,605 5,266
Real Estate Loans – Construction [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 0 0    
Ending balance collectively evaluated for impairment 512 234    
Financing receivables, Ending balance individually evaluated for impairment 0 0    
Financing receivables, Ending balance collectively evaluated for impairment 31,841 10,561    
Total 31,841 10,561    
Allowance for loan losses 481 187    
Reserve for undisbursed lines of credit 31 47    
Total allowance for credit losses 512 234 477 283
Installment Loans [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 0 0    
Ending balance collectively evaluated for impairment 18 17    
Financing receivables, Ending balance individually evaluated for impairment 0 0    
Financing receivables, Ending balance collectively evaluated for impairment 5,655 4,701    
Total 5,655 4,701    
Allowance for loan losses 18 17    
Reserve for undisbursed lines of credit 0 0    
Total allowance for credit losses 18 17 23 24
All Other Loans [Member]
        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Ending balance individually evaluated for impairment 0 0    
Ending balance collectively evaluated for impairment 10 11    
Financing receivables, Ending balance individually evaluated for impairment 0 0    
Financing receivables, Ending balance collectively evaluated for impairment 895 376    
Total 895 376    
Allowance for loan losses 10 11    
Reserve for undisbursed lines of credit 0 0    
Total allowance for credit losses $ 10 $ 11 $ 17 $ 23