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	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 12,891	$ 12,906	$ 12,815	$ 12,828
Charge-offs	(62)	(55)	(177)	(158)
Recoveries	19	7	110	38
Provision (credit)	150		250	150
Ending balance	12,998	12,858	12,998	12,858
Commercial, Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,450	3,656	3,331	3,354
Charge-offs	(11)		(28)	(34)
Recoveries	3		31	3
Provision (credit)	(51)	(253)	57	80
Ending balance	3,391	3,403	3,391	3,403
Municipal Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	369	386	636	768
Provision (credit)	291	316	24	(66)
Ending balance	660	702	660	702
Real Estate Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,126	3,246	3,127	3,081
Charge-offs	(29)	(7)	(84)	(25)
Recoveries	7		36	20
Provision (credit)	(65)	42	(40)	205
Ending balance	3,039	3,281	3,039	3,281
Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	5,354	5,089	5,251	5,085
Recoveries	1		2
Provision (credit)	(47)	(45)	55	(41)
Ending balance	5,308	5,044	5,308	5,044
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	533	494	415	512
Provision (credit)	11	(94)	129	(112)
Ending balance	544	400	544	400
Installment Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	59	18	13	18
Charge-offs	(22)		(65)
Recoveries	8		41	1
Provision (credit)	11	(2)	67	(3)
Ending balance	$ 56	16	56	16
All Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance		17	42	10
Charge-offs		(48)		(99)
Recoveries		7		14
Provision (credit)		36	$ (42)	87
Ending balance		$ 12		$ 12

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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