Loans And The Allowance For Credit Losses (Nonaccrual Loans By Class) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	$ 748	$ 598
Total nonaccrual loans including TDRs	801	661
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	7	88
Nonaccruing TDR's	3	5
Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	645	431
Nonaccruing TDR's	50	58
Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccruing non-TDR loans	$ 96	$ 79