Loans And The Allowance For Credit Losses (Composition of Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 1,200,170	$ 1,182,334
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	195,782	177,597
Municipal Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	91,410	94,366
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	461,459	469,529
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	419,500	412,447
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	28,512	23,858
Installment Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3,454	4,504
All Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 53	$ 33