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Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Real estate loans:
Commercial and industrial loans	$ 24,215	$ 24,048
Consumer and other loans	10,885	11,083
Loans	454,076	438,999		$ 398,517
Allowance for loan losses	(5,520)	(5,524)	[1]	(6,771)	$ (6,718)
Loans, net	448,556	433,475	[1]
Construction and Land Development [Member]
Real estate loans:
Loans	31,505	33,135		33,344
Allowance for loan losses	(1,370)	(1,532)		(1,601)	(1,403)
Secured by 1-4 Family Residential [Member]
Real estate loans:
Loans	196,165	189,286		172,874
Allowance for loan losses	(984)	(939)		$ (952)	$ (1,204)
Other Real Estate Loans [Member]
Real estate loans:
Loans	$ 191,306	$ 181,447
[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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Reflects the aggregate gross carrying amount of all commercial loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on commercial loans and leases.

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Reflects the aggregate gross carrying amount of all consumer loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on consumer loans and leases.

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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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