Loans - Summary of Balances of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Summary of balances of loans
Total loans	$ 347,222	$ 298,054
Net unamortized deferred loan costs	324	393
Allowance for loan losses	(4,223)	(3,205)
Loans, net	343,323	295,242
Construction, Land and Land Development
Summary of balances of loans
Total loans	42,129	43,048
Farmland
Summary of balances of loans
Total loans	1,030	1,128
Commercial Mortgages (Non-Owner Occupied)
Summary of balances of loans
Total loans	29,086	20,534
Commercial Mortgages (Owner Occupied)
Summary of balances of loans
Total loans	43,956	33,326
Residential First Mortgages
Summary of balances of loans
Total loans	164,405	135,267
Residential Revolving and Junior Mortgages
Summary of balances of loans
Total loans	26,497	25,400
Commercial and Industrial
Summary of balances of loans
Total loans	35,104	34,002
Consumer and Other Loans
Summary of balances of loans
Total loans	$ 5,015	$ 5,349

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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-Section S99
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-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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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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