Composition of Loan Portfolio (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 4,898		$ 2,906
Loans	388,062		385,022
Total loans	392,960		387,928
Allowance for loan losses	(4,400)	(4,468)	(4,511)
Loans, net	388,560		383,417
Percent of loan to total loan portfolio	100.00%		100.00%
Mortgage loans held for sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,898		2,906
Percent of loan to total loan portfolio	1.20%		0.70%
Commercial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	51,616		48,385
Percent of loan to total loan portfolio	13.10%		12.50%
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	135,660		138,943
Percent of loan to total loan portfolio	34.50%		35.80%
Mortgage-residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	129,149		117,692
Percent of loan to total loan portfolio	32.90%		30.30%
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	56,761		63,357
Percent of loan to total loan portfolio	14.40%		16.30%
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 14,876		$ 16,645
Percent of loan to total loan portfolio	3.90%		4.40%

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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+ Details

- Definition

Amount before allowance and after 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.

+ References+ Details

- Definition

The aggregate carrying amount of loans receivable that will be sold to other entities. Includes mortgage and all other loans (collectively, loans) not classified as held for investment. Such loans are stated at the lower of cost or market, or elected fair value. Mortgage loans exclude mortgage-backed securities which are considered a debt security (other loan).

+ References

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