Loans and Allowance for Loan Losses (Evaluation for Impairment) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	$ 399	$ 418
ALL, Collectively evaluated for impairment	12,042	16,690
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	15,195	20,345	$ 26,785	$ 29,314
Loans held for investment, Individually evaluated for impairment	26,229	34,482
Loans held for investment, Collectively evaluated for impairment	1,430,002	1,200,464
Loans held for investment, PI loans with no credit deterioration	3,235	4,141
Loans held for investment	1,543,795	1,357,788
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	2,754	3,237
Loans held for investment	84,329	118,701
Commercial and agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	0	58
ALL, Collectively evaluated for impairment	2,091	3,600
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	2,402	3,915	2,931	3,238
Loans held for investment, Individually evaluated for impairment	399	498
Loans held for investment, Collectively evaluated for impairment	146,912	105,380
Loans held for investment, PI loans with no credit deterioration	0	0
Loans held for investment	152,306	113,413
Commercial and agricultural [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	311	257
Loans held for investment	4,995	7,535
Real estate - construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	0	0
ALL, Collectively evaluated for impairment	1,190	2,656
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	1,769	3,163	5,233	4,987
Loans held for investment, Individually evaluated for impairment	775	2,344
Loans held for investment, Collectively evaluated for impairment	98,483	66,786
Loans held for investment, PI loans with no credit deterioration	421	578
Loans held for investment	107,002	78,327
Real estate - construction [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	579	507
Loans held for investment	7,323	8,619
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	399	331
ALL, Collectively evaluated for impairment	4,358	5,317
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	5,141	5,847	8,869	8,701
Loans held for investment, Individually evaluated for impairment	11,235	11,409
Loans held for investment, Collectively evaluated for impairment	662,402	638,456
Loans held for investment, PI loans with no credit deterioration	2,814	3,563
Loans held for investment	687,554	667,602
Real estate - mortgage, 1-4 family residential [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	384	199
Loans held for investment	11,103	14,174
Real estate - mortgage, Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	0	29
ALL, Collectively evaluated for impairment	972	2,065
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	2,328	4,179	7,195	9,627
Loans held for investment, Individually evaluated for impairment	13,820	20,231
Loans held for investment, Collectively evaluated for impairment	415,304	318,752
Loans held for investment, PI loans with no credit deterioration	0	0
Loans held for investment	489,113	426,328
Real estate - mortgage, Commercial [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	1,356	2,085
Loans held for investment	59,989	87,345
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL, Individually evaluated for impairment	0	0
ALL, Collectively evaluated for impairment	3,431	3,052
ALL, PI loans with no credit deterioration	0	0
ALL evaluated for impairment	3,555	3,241	$ 2,557	$ 2,761
Loans held for investment, Individually evaluated for impairment	0	0
Loans held for investment, Collectively evaluated for impairment	106,901	71,090
Loans held for investment, PI loans with no credit deterioration	0	0
Loans held for investment	107,820	72,118
Consumer [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
ALL evaluated for impairment	124	189
Loans held for investment	$ 919	$ 1,028

The balance of financing receivables that were acquired with no credit deterioration.

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The valuation allowance for financing recievable acquired with no credit deterioration.

+ References

No definition available.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ 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 (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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The valuation allowance for financing receivables that are expected to be uncollectible 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 (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually 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 (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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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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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=49124121&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually 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=49124121&loc=SL6953423-111524

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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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