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Allowance For Loan Loss Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Financing Receivable Allowance For Credit Loss Additional Information [Line Items]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	$ 4,425		$ 4,538
Financing Receivable, Collectively Evaluated for Impairment	429,426		393,808
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	349		184
Financing Receivable, Individually Evaluated for Impairment	2,854		3,267
Allowance for loan losses	4,774	$ 4,289	4,722
Loans and Leases Receivable, Gross, Carrying Amount	432,280	426,919	397,075
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	517		644
Financing Receivable, Collectively Evaluated for Impairment	50,152		52,475
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	40		61
Allowance for loan losses	517		644
Loans and Leases Receivable, Gross, Carrying Amount	50,192	52,479	52,536
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	694		830
Financing Receivable, Collectively Evaluated for Impairment	45,887		37,307
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	66		618
Allowance for loan losses	694		830
Loans and Leases Receivable, Gross, Carrying Amount	45,953	43,694	37,925
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	2,055		1,704
Financing Receivable, Collectively Evaluated for Impairment	206,572		181,192
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	349		184
Financing Receivable, Individually Evaluated for Impairment	2,748		1,679
Allowance for loan losses	2,404		1,888
Loans and Leases Receivable, Gross, Carrying Amount	209,320	203,853	182,871
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	1,026		1,153
Financing Receivable, Collectively Evaluated for Impairment	117,046		110,356
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		909
Allowance for loan losses	1,026		1,153
Loans and Leases Receivable, Gross, Carrying Amount	117,046	116,673	111,265
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	133		207
Financing Receivable, Collectively Evaluated for Impairment	9,769		12,478
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0
Financing Receivable, Individually Evaluated for Impairment	0		0
Allowance for loan losses	133		207
Loans and Leases Receivable, Gross, Carrying Amount	$ 9,769	$ 10,220	$ 12,478

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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
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
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-Topic 310
-SubTopic 10
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-Paragraph 11B
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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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-Paragraph 11B
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
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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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