Loans and Related Allowace for Loan Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Average Recorded Investment, Total	$ 8,082	$ 8,901	$ 8,478	$ 9,246
Interest Income Recognized, Total	28	46	58	91
Cash Basis Interest Income, Total	25		25
Commercial, Financial and Agricultural [Member]
Impaired Loans with No Allowance: Average Recorded Investment	144	207	151	218
Impaired Loans with No Allowance: Interest Income Recognized	2	3	5	7
Average Recorded Investment, Total	144	207	151	218
Interest Income Recognized, Total	2	3	5	7
Real Estate - Commercial [Member]
Impaired Loans with No Allowance: Average Recorded Investment	2,598	2,764	2,641	2,530
Impaired Loans with No Allowance: Interest Income Recognized	15	40	42	81
Impaired Loans with No Allowance: Cash Basis Interest Income	8		8
Impaired Loans with Allowance: Average Recorded Investment	124		124
Average Recorded Investment, Total	2,722	2,764	2,765	2,530
Interest Income Recognized, Total	15	40	42	81
Cash Basis Interest Income, Total	8		8
Real Estate - Construction [Member]
Impaired Loans with No Allowance: Average Recorded Investment	734	649	1,087	1,009
Impaired Loans with No Allowance: Cash Basis Interest Income	2		2
Impaired Loans with Allowance: Average Recorded Investment	1,547	1,007	1,196	1,132
Impaired Loans with Allowance: Interest Income Recognized		3		3
Average Recorded Investment, Total	2,281	1,656	2,283	2,141
Interest Income Recognized, Total		3		3
Cash Basis Interest Income, Total	2		2
Real Estate - Mortgage [Member]
Impaired Loans with No Allowance: Average Recorded Investment	2,749	550	2,023	1,398
Impaired Loans with No Allowance: Interest Income Recognized	11		11
Impaired Loans with No Allowance: Cash Basis Interest Income	12		12
Impaired Loans with Allowance: Average Recorded Investment	186	3,724	1,256	2,959
Impaired Loans with Allowance: Cash Basis Interest Income	3		3
Average Recorded Investment, Total	2,935	4,274	3,279	4,357
Interest Income Recognized, Total	11		11
Cash Basis Interest Income, Total	$ 15		$ 15

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeCashBasisMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration