Loans and Related Allowance for Credit Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, Total	$ 6,921	$ 8,082	$ 7,297	$ 8,478
Interest Income Recognized, Total	21	28	47	58
Cash Basis Interest Income, Total	65	25	92	25
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	7	144	50	151
Impaired Loans with No Allowance: Interest Income Recognized	11	2	11	5
Impaired Loans with No Allowance: Cash Basis Interest Income	1		1
Average Recorded Investment, Total	7	144	50	151
Interest Income Recognized, Total	11	2	11	5
Cash Basis Interest Income, Total	1		1
Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	917	2,598	1,508	2,641
Impaired Loans with No Allowance: Interest Income Recognized	1	15	12	42
Impaired Loans with No Allowance: Cash Basis Interest Income	21	8	24	8
Impaired Loans with Allowance: Average Recorded Investment	1,767	124	887	124
Impaired Loans with Allowance: Cash Basis Interest Income	2		11
Average Recorded Investment, Total	2,684	2,722	2,395	2,765
Interest Income Recognized, Total	1	15	12	42
Cash Basis Interest Income, Total	23	8	35	8
Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	1	734	253	1,087
Impaired Loans with No Allowance: Cash Basis Interest Income		2		2
Impaired Loans with Allowance: Average Recorded Investment	526	1,547	1,001	1,196
Average Recorded Investment, Total	527	2,281	1,254	2,283
Cash Basis Interest Income, Total		2		2
Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	3,348	2,749	3,240	2,023
Impaired Loans with No Allowance: Interest Income Recognized	9	11	24	11
Impaired Loans with No Allowance: Cash Basis Interest Income	41	12	56	12
Impaired Loans with Allowance: Average Recorded Investment	355	186	358	1,256
Impaired Loans with Allowance: Cash Basis Interest Income		3		3
Average Recorded Investment, Total	3,703	2,935	3,598	3,279
Interest Income Recognized, Total	9	11	24	11
Cash Basis Interest Income, Total	$ 41	$ 15	$ 56	$ 15