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Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Impaired loans and the related allowance
Unpaid Principal Balance	$ 22,292	$ 22,675
Recorded Investment with No Allowance	7,657	7,198
Recorded Investment with Allowance	11,563	9,782
Total Recorded Investment	19,220	16,980
Related Allowance	1,924	1,838
Average Recorded Investment	17,696	20,990
Interest Income Recognized	136	548
Commercial and industrial [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	2,510	161
Recorded Investment with Allowance	2,509	160
Total Recorded Investment	2,509	160
Related Allowance	261	35
Average Recorded Investment	185	330
Interest Income Recognized	27	10
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	6,441	2,947
Recorded Investment with No Allowance	4,988	622
Recorded Investment with Allowance	1,110	1,894
Total Recorded Investment	6,098	2,516
Related Allowance	604	567
Average Recorded Investment	4,244	5,691
Interest Income Recognized	16	99
Secured by 1-4 family residential [Member] | Real estate loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	3,898	4,706
Recorded Investment with No Allowance	1,024	1,690
Recorded Investment with Allowance	1,935	2,086
Total Recorded Investment	2,959	3,776
Related Allowance	156	306
Average Recorded Investment	4,116	4,821
Interest Income Recognized	23	163
Other real estate loans [Member] | Real estate loans [Member]
Impaired loans and the related allowance
Unpaid Principal Balance	9,443	14,861
Recorded Investment with No Allowance	1,645	4,886
Recorded Investment with Allowance	6,009	5,642
Total Recorded Investment	7,654	10,528
Related Allowance	903	930
Average Recorded Investment	9,151	10,148
Interest Income Recognized	$ 70	$ 276

X

- Definition

Impaired financing receivable interest income recognized.

+ References

No definition available.

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Balance Type:	credit
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- Definition

Impaired financing receivables average recorded investment.

+ References

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X

- 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

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 investment in impaired financing receivables for which there is 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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