Loans And The Allowance For Credit Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 3,415	$ 3,022
Unpaid Principal Balance	5,070	4,671
Related Allowance	678	569
Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	9	0
Unpaid Principal Balance	54	45
Related Allowance	3	0
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	724	233
Unpaid Principal Balance	1,679	1,198
Related Allowance	126	149
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,401	2,317
Unpaid Principal Balance	2,846	2,692
Related Allowance	491	361
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	281	472
Unpaid Principal Balance	491	736
Related Allowance	58	59
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0
Unpaid Principal Balance	44	45
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	306	7
Unpaid Principal Balance	1,244	970
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	836	853
Unpaid Principal Balance	1,237	1,174
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	171	16
Unpaid Principal Balance	207	52
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	107	295
Unpaid Principal Balance	243	487
Related Allowance	0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0
Unpaid Principal Balance	70	70
Related Allowance	0	0
With Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	9
Unpaid Principal Balance	10
Related Allowance	3
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	418	226
Unpaid Principal Balance	435	228
Related Allowance	126	149
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	694	748
Unpaid Principal Balance	702	766
Related Allowance	154	173
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	700	700
Unpaid Principal Balance	700	700
Related Allowance	337	188
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	174	177
Unpaid Principal Balance	178	179
Related Allowance	$ 58	$ 59