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Loans And The Allowance For Credit Losses (Composition of Loan Portfolio) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Financing Receivable, Recorded Investment [Line Items]    
Total Loans $ 1,101,713 $ 1,082,923
Commercial, Financial And Agricultural [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 168,500 165,023
Municipal Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 85,211 84,689
Real Estate Loans – Residential [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 504,226 489,951
Real Estate Loans – Commercial [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 324,208 327,622
Real Estate Loans – Construction [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 14,115 10,561
Installment Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans 5,192 4,701
All Other Loans [Member]
   
Financing Receivable, Recorded Investment [Line Items]    
Total Loans $ 261 $ 376