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Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 4,431		$ 4,412
Financing Receivable, Collectively Evaluated for Impairment	428,596		406,634
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	97		474
Financing Receivable, Individually Evaluated for Impairment	2,653		2,325
Allowance for loan losses	4,528	$ 4,289	4,886
Loans and Leases Receivable, Gross, Carrying Amount	431,249	426,919	408,959
Commercial and Industrial Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	506		681
Financing Receivable, Collectively Evaluated for Impairment	50,159		57,246
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	31		64
Allowance for loan losses	506		681
Loans and Leases Receivable, Gross, Carrying Amount	50,190	52,479	57,310
Construction And Land Development Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	744		640
Financing Receivable, Collectively Evaluated for Impairment	49,291		38,252
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	55		602
Allowance for loan losses	744		640
Loans and Leases Receivable, Gross, Carrying Amount	49,346	43,694	38,854
Commercial Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,995		1,672
Financing Receivable, Collectively Evaluated for Impairment	206,258		182,465
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	97		474
Financing Receivable, Individually Evaluated for Impairment	2,567		1,659
Allowance for loan losses	2,092		2,146
Loans and Leases Receivable, Gross, Carrying Amount	208,825	203,853	184,124
Residential Real Estate Loans, Total [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,061		1,180
Financing Receivable, Collectively Evaluated for Impairment	113,763		115,039
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	1,061		1,180
Loans and Leases Receivable, Gross, Carrying Amount	113,763	116,673	115,039
Consumer Installment and Revolving Loans [Member]
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	125		239
Financing Receivable, Collectively Evaluated for Impairment	9,125		13,632
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	125		239
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,125	$ 10,220	$ 13,632

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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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)
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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-Publisher FASB
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 310
-SubTopic 10
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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

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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.

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