Loans And The Allowance For Credit Losses (Summary Of Loans By Credit Quality Indicator) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 1,072,879	$ 1,027,626	$ 1,008,076
Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	5,259	5,806
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	334	399
Unrated Residential And Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	454,400	423,919
Unrated Residential And Consumer [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	5,259	5,806
Unrated Residential And Consumer [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	334	399
Pass [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	553,409	525,312
Pass [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Pass [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Pass-Watch [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	38,198	55,059
Pass-Watch [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Pass-Watch [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Special Mention [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	5,763	9,361
Special Mention [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Special Mention [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Substandard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	21,109	13,975
Substandard [Member] | Installment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Substandard [Member] | All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Commercial, Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	169,450	146,990	156,043
Commercial, Financial And Agricultural [Member] | Unrated Residential And Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	2
Commercial, Financial And Agricultural [Member] | Pass [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	148,550	117,772
Commercial, Financial And Agricultural [Member] | Pass-Watch [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	17,928	28,326
Commercial, Financial And Agricultural [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	501	170
Commercial, Financial And Agricultural [Member] | Substandard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	2,471	720
Municipal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	82,048	101,705	97,015
Municipal Loans [Member] | Unrated Residential And Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Municipal Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	82,048	101,705
Municipal Loans [Member] | Pass-Watch [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Municipal Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Municipal Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	477,321		425,620
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	438,642	401,331
Real Estate Loans – Residential [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	38,679	38,487
Real Estate Loans – Residential [Member] | Unrated Residential And Consumer [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	411,034	379,512
Real Estate Loans – Residential [Member] | Unrated Residential And Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	36,784	38,020
Real Estate Loans – Residential [Member] | Pass [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	24,690	18,647
Real Estate Loans – Residential [Member] | Pass [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,195	146
Real Estate Loans – Residential [Member] | Pass-Watch [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,233	1,569
Real Estate Loans – Residential [Member] | Pass-Watch [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Residential [Member] | Special Mention [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	747	641
Real Estate Loans – Residential [Member] | Special Mention [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Residential [Member] | Substandard [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	938	962
Real Estate Loans – Residential [Member] | Substandard [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	700	321
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	327,182		310,863
Real Estate Loans – Commercial [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	217,563	206,256
Real Estate Loans – Commercial [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	109,619	107,659
Real Estate Loans – Commercial [Member] | Unrated Residential And Consumer [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Commercial [Member] | Unrated Residential And Consumer [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Commercial [Member] | Pass [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	190,603	175,878
Real Estate Loans – Commercial [Member] | Pass [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	96,554	95,239
Real Estate Loans – Commercial [Member] | Pass-Watch [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	8,409	14,001
Real Estate Loans – Commercial [Member] | Pass-Watch [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	10,101	8,891
Real Estate Loans – Commercial [Member] | Special Mention [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	3,035	7,355
Real Estate Loans – Commercial [Member] | Special Mention [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,480	1,195
Real Estate Loans – Commercial [Member] | Substandard [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	15,516	9,022
Real Estate Loans – Commercial [Member] | Substandard [Member] | Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,484	2,334
Real Estate Loans – Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	11,285		12,238
Real Estate Loans – Construction [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,960	1,798
Real Estate Loans – Construction [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	9,325	17,195
Real Estate Loans – Construction [Member] | Unrated Residential And Consumer [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	396	99
Real Estate Loans – Construction [Member] | Unrated Residential And Consumer [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	593	81
Real Estate Loans – Construction [Member] | Pass [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,564	0
Real Estate Loans – Construction [Member] | Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	8,205	15,925
Real Estate Loans – Construction [Member] | Pass-Watch [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	1,699
Real Estate Loans – Construction [Member] | Pass-Watch [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	527	573
Real Estate Loans – Construction [Member] | Special Mention [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Construction [Member] | Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Construction [Member] | Substandard [Member] | Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	0	0
Real Estate Loans – Construction [Member] | Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 0	$ 616