Loans And The Allowance For Credit Losses (Allowance For Loan Losses And The Recorded Investment In Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance individually evaluated for impairment	$ 119		$ 112
Ending balance collectively evaluated for impairment	12,787		12,716
Financing receivables, Ending balance individually evaluated for impairment	888		906
Financing receivables, Ending balance collectively evaluated for impairment	1,125,623		1,165,327
Financing receivables, Totals	1,126,511		1,166,233
Allowance for loan losses	12,040		12,042
Reserve for undisbursed lines of credit	866		786
Total allowance for credit losses	12,906	12,929	12,828	12,658	12,588	12,312
Commercial, Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance individually evaluated for impairment			2
Ending balance collectively evaluated for impairment	3,656		3,352
Financing receivables, Ending balance individually evaluated for impairment	70		20
Financing receivables, Ending balance collectively evaluated for impairment	193,736		172,790
Financing receivables, Totals	193,806		172,810
Allowance for loan losses	2,978		2,740
Reserve for undisbursed lines of credit	678		614
Total allowance for credit losses	3,656	3,378	3,354	3,274	3,411	3,447
Municipal Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance collectively evaluated for impairment	386		768
Financing receivables, Ending balance collectively evaluated for impairment	46,358		94,007
Financing receivables, Totals	46,358		94,007
Allowance for loan losses	381		758
Reserve for undisbursed lines of credit	5		10
Total allowance for credit losses	386	693	768	400	655	522
Real Estate Loans – Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance individually evaluated for impairment	52		41
Ending balance collectively evaluated for impairment	3,194		3,040
Financing receivables, Ending balance individually evaluated for impairment	661		722
Financing receivables, Ending balance collectively evaluated for impairment	476,035		488,984
Financing receivables, Totals	476,696		489,706
Allowance for loan losses	3,158		2,995
Reserve for undisbursed lines of credit	88		86
Total allowance for credit losses	3,246	3,352	3,081	3,561	3,708	3,582
Real Estate Loans – Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance individually evaluated for impairment	67		69
Ending balance collectively evaluated for impairment	5,022		5,016
Financing receivables, Ending balance individually evaluated for impairment	157		164
Financing receivables, Ending balance collectively evaluated for impairment	372,668		371,155
Financing receivables, Totals	372,825		371,319
Allowance for loan losses	5,053		5,040
Reserve for undisbursed lines of credit	36		45
Total allowance for credit losses	5,089	5,119	5,085	4,842	4,511	4,499
Real Estate Loans – Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance collectively evaluated for impairment	494		512
Financing receivables, Ending balance collectively evaluated for impairment	32,336		31,841
Financing receivables, Totals	32,336		31,841
Allowance for loan losses	439		481
Reserve for undisbursed lines of credit	55		31
Total allowance for credit losses	494	360	512	551	275	234
Installment Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance collectively evaluated for impairment	18		18
Financing receivables, Ending balance collectively evaluated for impairment	4,238		5,655
Financing receivables, Totals	4,238		5,655
Allowance for loan losses	15		18
Reserve for undisbursed lines of credit	3
Total allowance for credit losses	18	18	18	21	16	17
All Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance collectively evaluated for impairment	17		10
Financing receivables, Ending balance collectively evaluated for impairment	252		895
Financing receivables, Totals	252		895
Allowance for loan losses	16		10
Reserve for undisbursed lines of credit	1
Total allowance for credit losses	$ 17	$ 9	$ 10	$ 9	$ 12	$ 11