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Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015		Jun. 30, 2015	Dec. 31, 2014
Real estate loans:
Loans	$ 465,546	$ 438,999		$ 391,721
Allowance for loan losses	(5,734)	(5,524)	[1]	(6,129)	$ (6,718)
Loans, net	459,812	433,475	[1]
Construction and Land Development [Member]
Real estate loans:
Loans	33,232	33,135		32,009
Allowance for loan losses	(669)	(1,532)		(1,609)	(1,403)
Secured by 1-4 Family Residential [Member]
Real estate loans:
Loans	196,295	189,286		173,265
Allowance for loan losses	(1,038)	(939)		(926)	(1,204)
Other Real Estate Loans [Member]
Real estate loans:
Loans	200,162	181,447
Commercial and Industrial [Member]
Real estate loans:
Loans	24,721	24,048		19,319
Allowance for loan losses	(316)	(306)		(258)	(310)
Consumer and Other Loans [Member]
Real estate loans:
Loans	11,136	11,083		11,732
Allowance for loan losses	$ (302)	$ (213)		$ (164)	$ (143)
[1] Derived from audited consolidated financial statements.

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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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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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