Loans And The Allowance For Credit Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 2,912	$ 2,511	$ 4,104
Recorded Investment	3,022
Unpaid Principal Balance	4,671	4,173	5,651
Related allowance	569	227	333
Average Recorded Investment	2,629	3,430	7,497
Interest income	94	130	574
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	233	114	595
Unpaid Principal Balance	1,198	1,142	1,560
Related allowance	149	17	275
Average Recorded Investment	76	394	4,434
Interest income	3	18	348
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,317	1,985	2,626
Unpaid Principal Balance	2,692	2,276	2,944
Related allowance	361	210	58
Average Recorded Investment	2,036	2,321	1,735
Interest income	86	87	114
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	472	412	883
Unpaid Principal Balance	736	618	1,130
Related allowance	59	0	0
Average Recorded Investment	516	605	1,003
Interest income	5	24	71
Real Estate Loans – Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		0	0
Unpaid Principal Balance		94	0
Related allowance		0	0
Average Recorded Investment		107	325
Interest income		0	41
Installment and Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Unpaid Principal Balance	45	43	17
Related allowance	0	0	0
Average Recorded Investment	1	3	0
Interest income	0	1	0
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Unpaid Principal Balance	45	43	17
Related allowance	0	0	0
Average Recorded Investment	1	3	0
Interest income	0	1	0
With No Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	7	77	112
Unpaid Principal Balance	970	1,099	1,077
Related allowance	0	0	0
Average Recorded Investment	39	154	2,536
Interest income	1	0	248
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	853	914	1,318
Unpaid Principal Balance	1,174	1,162	1,636
Related allowance	0	0	0
Average Recorded Investment	807	1,201	269
Interest income	51	44	83
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	16	222	644
Unpaid Principal Balance	52	224	644
Related allowance	0	0	0
Average Recorded Investment	247	325	407
Interest income	34	43	17
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	295	412	483
Unpaid Principal Balance	487	548	490
Related allowance	0	0	0
Average Recorded Investment	380	495	601
Interest income	3	11	49
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	400
Unpaid Principal Balance	70	70	640
Related allowance	0	0	0
Average Recorded Investment	0	64	402
Interest income	0	4	22
With No Related Allowance Recorded [Member] | Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		0	0
Unpaid Principal Balance		94	0
Related allowance		0	0
Average Recorded Investment		107	130
Interest income		0	0
With No Related Allowance Recorded [Member] | Real Estate Loans – Construction [Member] | Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment			0
Unpaid Principal Balance			0
Related allowance			0
Average Recorded Investment			195
Interest income			41
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	226	37	483
Unpaid Principal Balance	228	43	483
Related allowance	149	17	275
Average Recorded Investment	37	240	1,898
Interest income	2	18	100
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	748	790	664
Unpaid Principal Balance	766	830	664
Related allowance	173	207	58
Average Recorded Investment	662	761	1,059
Interest income	1	0	14
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	700	59
Unpaid Principal Balance	700	60
Related allowance	188	3
Average Recorded Investment	320	34
Interest income	0	0
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	177
Unpaid Principal Balance	179
Related allowance	59
Average Recorded Investment	136
Interest income	2
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		0
Unpaid Principal Balance		0
Related allowance		0
Average Recorded Investment		46
Interest income		$ 9