Loans and Allowance for Loan Losses Schedule of Loans by Impairment Method (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	$ 2,066	$ 2,872
Loans, collectively evaluated for impairment	1,183,171	1,181,779
Loans	1,185,237	1,184,651
Commercial loan [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	454	456
Loans, collectively evaluated for impairment	313,656	316,452
Loans	314,110	316,908
Construction, land and land development [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	364	1,201
Loans, collectively evaluated for impairment	145,705	153,289
Loans	146,069	154,490
1-4 family residential first mortgages [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	324	257
Loans, collectively evaluated for impairment	50,553	53,240
Loans	50,877	53,497
Home equity [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	223	229
Loans, collectively evaluated for impairment	23,397	24,271
Loans	23,620	24,500
Commercial real estate [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	697	729
Loans, collectively evaluated for impairment	639,412	625,209
Loans	640,109	625,938
Consumer and other loans [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	4	0
Loans, collectively evaluated for impairment	10,448	9,318
Loans	$ 10,452	$ 9,318

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The balance of financing receivables that were collectively evaluated for impairment.

+ 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 (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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