Loans And The Allowance For Credit Losses (Impaired Loans By Class) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 791	$ 906	$ 3,022
Unpaid Principal Balance	904	1,178	3,289
Related allowance	63	112	569
Average Recorded Investment	825	2,267	2,629
Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related allowance	0	0
Average Recorded Investment	0	6
Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	134	20	233
Unpaid Principal Balance	136	21	250
Related allowance	0	2	149
Average Recorded Investment	98	554	76
Real Estate Loans – Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	657	722	2,317
Unpaid Principal Balance	768	982	2,493
Related allowance	63	41	361
Average Recorded Investment	596	1,444	2,036
Real Estate Loans – Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	164	472
Unpaid Principal Balance	0	175	546
Related allowance	0	69	59
Average Recorded Investment	131	263	516
Installment and Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment			0
Unpaid Principal Balance			0
Related allowance			0
Average Recorded Investment			1
With No Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related allowance	0	0	0
Average Recorded Investment	0	1	1
With No Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	134	0	7
Unpaid Principal Balance	136	0	22
Related allowance	0	0	0
Average Recorded Investment	86	211	39
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	147	410	853
Unpaid Principal Balance	257	629	1,010
Related allowance	0	0	0
Average Recorded Investment	256	541	807
With No Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	79	181	16
Unpaid Principal Balance	79	218	17
Related allowance	0	0	0
Average Recorded Investment	136	145	247
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	295
Unpaid Principal Balance	0	0	367
Related allowance	0	0	0
Average Recorded Investment	12	93	380
With No Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	0
Unpaid Principal Balance	0	0	0
Related allowance	0	0	0
Average Recorded Investment	0	0	0
With Related Allowance Recorded [Member] | Installment Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related allowance	0	0
Average Recorded Investment	0	5
With Related Allowance Recorded [Member] | Commercial, Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	20	226
Unpaid Principal Balance	0	21	228
Related allowance	0	2	149
Average Recorded Investment	12	343	37
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	431	131	748
Unpaid Principal Balance	432	135	766
Related allowance	63	41	173
Average Recorded Investment	204	512	662
With Related Allowance Recorded [Member] | Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	0	700
Unpaid Principal Balance	0	0	700
Related allowance	0	0	188
Average Recorded Investment	0	246	320
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	0	164
Unpaid Principal Balance	0	175
Related allowance	0	69
Average Recorded Investment	119	170
With Related Allowance Recorded [Member] | Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment			177
Unpaid Principal Balance			179
Related allowance			59
Average Recorded Investment			$ 136