Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Impaired loans and the related allowance
Unpaid Principal Balance	$ 22,675	$ 32,317	$ 45,669
Recorded Investment with No Allowance	7,198	15,161	9,716
Recorded Investment with Allowance	9,782	10,758	34,149
Total Recorded Investment	16,980	25,920	43,865
Related Allowance	1,838	2,438	8,597
Average Recorded Investment	20,990	38,174	22,310
Interest Income Recognized	548	1,091	1,945
Commercial and industrial [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	161	480	48
Recorded Investment with Allowance	160	480	48
Total Recorded Investment	160	480	48
Related Allowance	35	309	36
Average Recorded Investment	330	660	163
Interest Income Recognized	10	27	4
Consumer and other loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance
Recorded Investment with No Allowance
Recorded Investment with Allowance
Total Recorded Investment
Related Allowance
Average Recorded Investment
Interest Income Recognized
Construction and land development [Member] \| Real estate loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	2,947	8,106	10,440
Recorded Investment with No Allowance	622	3,531	1,217
Recorded Investment with Allowance	1,894	4,109	8,492
Total Recorded Investment	2,516	7,640	9,709
Related Allowance	567	930	3,006
Average Recorded Investment	5,691	7,077	2,920
Interest Income Recognized	99	367	374
Secured by 1-4 family residential [Member] \| Real estate loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	4,706	8,566	5,701
Recorded Investment with No Allowance	1,690	3,495	595
Recorded Investment with Allowance	2,086	3,365	5,087
Total Recorded Investment	3,776	6,860	5,682
Related Allowance	306	848	536
Average Recorded Investment	4,821	6,519	795
Interest Income Recognized	163	301	222
Other real estate loans [Member] \| Real estate loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	14,861	15,165	29,480
Recorded Investment with No Allowance	4,886	8,135	7,904
Recorded Investment with Allowance	5,642	2,805	20,522
Total Recorded Investment	10,528	10,940	28,426
Related Allowance	930	351	5,020
Average Recorded Investment	10,148	23,918	18,432
Interest Income Recognized	$ 276	$ 396	$ 1,345

Impaired financing receivable interest income recognized.

No definition available.

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- Definition

Impaired financing receivables average recorded investment.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

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

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

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

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

+ Details

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