Loans and Allowance for Loan Losses Schedule of Loans by Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	$ 1,003	$ 1,461
Loans, collectively evaluated for impairment	1,383,196	1,246,288
Loans	1,384,199	1,247,749
Commercial loans [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	127	142
Loans, collectively evaluated for impairment	352,647	348,909
Loans	352,774	349,051
Construction, land and land development [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	0	60
Loans, collectively evaluated for impairment	208,046	174,542
Loans	208,046	174,602
1-4 family residential first mortgages [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	116	352
Loans, collectively evaluated for impairment	48,774	51,018
Loans	48,890	51,370
Home equity [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	249	270
Loans, collectively evaluated for impairment	18,369	21,479
Loans	18,618	21,749
Commercial real estate [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	511	637
Loans, collectively evaluated for impairment	746,936	643,539
Loans	747,447	644,176
Consumer and other loans [Member]
Loans, Allowance for Loan Losses [Line Items]
Loans, individually evaluated for impairment	0	0
Loans, collectively evaluated for impairment	8,424	6,801
Loans	$ 8,424	$ 6,801

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.

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- Definition

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=66008989&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=65884687&loc=d3e4428-111522

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