Loans And The Allowance For Credit Losses (Loan Loss Experience And Activity In The Allowance For Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 12,764	$ 12,929	$ 12,815	$ 12,828
Charge-offs	(23)	(81)	(115)	(103)
Recoveries	50	8	91	31
Provision (credit)	100	50	100	150
Ending balance	12,891	12,906	12,891	12,906
Commercial, Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,375	3,378	3,331	3,354
Charge-offs	(6)	(34)	(17)	(34)
Recoveries	14	1	28	3
Provision (credit)	67	311	108	333
Ending balance	3,450	3,656	3,450	3,656
Municipal Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	543	693	636	768
Provision (credit)	(174)	(307)	(267)	(382)
Ending balance	369	386	369	386
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,110	3,352	3,127	3,081
Charge-offs		(16)	(55)	(18)
Recoveries	26	2	29	20
Provision (credit)	(10)	(92)	25	163
Ending balance	3,126	3,246	3,126	3,246
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	5,217	5,119	5,251	5,085
Recoveries			1
Provision (credit)	137	(30)	102	4
Ending balance	5,354	5,089	5,354	5,089
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	438	360	415	512
Provision (credit)	95	134	118	(18)
Ending balance	533	494	533	494
Installment Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	81	18	13	18
Charge-offs	(17)		(43)
Recoveries	10	1	33	1
Provision (credit)	(15)	(1)	56	(1)
Ending balance	$ 59	18	59	18
All Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance		9	42	10
Charge-offs		(31)		(51)
Recoveries		4		7
Provision (credit)		35	$ (42)	51
Ending balance		$ 17		$ 17

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

+ Details

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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