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Loans - Summary of Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Real estate loans:
Commercial and industrial loans	$ 19,950	$ 21,166
Consumer and other loans	11,448	12,240
Loans	406,413	378,410	$ 374,690
Allowance for loan losses	(5,575)	(6,718)	(9,716)	$ (10,644)
Loans, net	400,838	371,692
Construction and Land Development [Member]
Real estate loans:
Loans	29,935	29,475	29,862
Allowance for loan losses	(1,256)	(1,403)	(1,866)	(2,710)
Secured by 1-4 Family Residential [Member]
Real estate loans:
Loans	179,419	163,727	155,298
Allowance for loan losses	(879)	(1,204)	$ (2,911)	$ (2,975)
Other Real Estate Loans [Member]
Real estate loans:
Loans	$ 165,661	$ 151,802

X

- Definition

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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