Loans - Summary of Loans (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Real estate loans:
Commercial and industrial loans	$ 24,797	$ 22,803
Consumer and other loans	12,372	12,301
Total loans	367,490	357,093	377,513
Allowance for loan losses	(10,006)	(10,644)	(12,478)	(13,075)
Loans, net	357,484	346,449
Construction and Land Development [Member]
Real estate loans:
Real estate loans	32,795	34,060
Total loans	32,795	34,060	44,305
Allowance for loan losses	(2,114)	(2,710)	(3,270)	(2,481)
Secured by 1-4 Family Residential [Member]
Real estate loans:
Real estate loans	151,043	141,961
Total loans	151,043	141,961	145,628
Allowance for loan losses	(2,896)	(2,975)	(3,725)	(3,712)
Other Real Estate Loans [Member]
Real estate loans:
Real estate loans	146,483	145,968
Total loans	$ 146,483	$ 145,968

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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Reflects the aggregate gross carrying amount of all loans and leases held in portfolio, not otherwise categorized (such as commercial, consumer, or foreign), prior to deducting deferred income and the allowance for losses on loans and leases, not otherwise categorized (such as commercial, consumer, or foreign).

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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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