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Credit Quality of Loans and Allowance for Loan Losses, Summary of Loan Portfolio (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Loan portfolio [Abstract]      
Total loans $ 1,184,189 $ 1,137,554 [1] $ 1,037,859
Less allowance for loan losses (8,765) (8,779) [1]  
Loans, net 1,175,424 1,128,775 [1]  
Commercial, Financial and Agricultural [Member]
     
Loan portfolio [Abstract]      
Total loans 435,523 403,976  
Real Estate - Construction [Member]
     
Loan portfolio [Abstract]      
Total loans 78,988 82,691  
Real Estate - Commercial [Member]
     
Loan portfolio [Abstract]      
Total loans 408,546 397,135  
Real Estate - Residential [Member]
     
Loan portfolio [Abstract]      
Total loans 150,551 146,841  
Installment Loans to Individuals [Member]
     
Loan portfolio [Abstract]      
Total loans 101,869 97,459  
Lease Financing Receivable [Member]
     
Loan portfolio [Abstract]      
Total loans 5,102 5,542  
Other [Member]
     
Loan portfolio [Abstract]      
Total loans $ 3,610 $ 3,910  
[1] Derived from audited financial statements.