Loans And The Allowance For Credit Losses (Loan Loss Experience And Activity In The Allowance For Credit Losses) (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, Allowance for Credit Losses [Line Items]
Beginning balance	$ 12,929	$ 12,588	$ 12,828	$ 12,312
Charge-offs	(81)	(124)	(103)	(152)
Recoveries	8	44	31	98
Provision (credit)	50	150	150	400
Ending balance	12,906	12,658	12,906	12,658
Commercial, Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,378	3,411	3,354	3,447
Charge-offs	(34)		(34)
Recoveries	1	40	3	49
Provision (credit)	311	(177)	333	(222)
Ending balance	3,656	3,274	3,656	3,274
Municipal Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	693	655	768	522
Provision (credit)	(307)	(255)	(382)	(122)
Ending balance	386	400	386	400
Real Estate Loans – Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,352	3,708	3,081	3,582
Charge-offs	(16)	(96)	(18)	(103)
Recoveries	2	1	20	4
Provision (credit)	(92)	(52)	163	78
Ending balance	3,246	3,561	3,246	3,561
Real Estate Loans – Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	5,119	4,511	5,085	4,499
Charge-offs				(1)
Recoveries				40
Provision (credit)	(30)	331	4	304
Ending balance	5,089	4,842	5,089	4,842
Real Estate Loans – Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	360	275	512	234
Recoveries				1
Provision (credit)	134	276	(18)	316
Ending balance	494	551	494	551
Installment Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	18	16	18	17
Charge-offs
Recoveries	1		1
Provision (credit)	(1)	5	(1)	4
Ending balance	18	21	18	21
All Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	9	12	10	11
Charge-offs	(31)	(28)	(51)	(48)
Recoveries	4	3	7	4
Provision (credit)	35	22	51	42
Ending balance	$ 17	$ 9	$ 17	$ 9