Loans - Loans (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Jun. 30, 2013	Dec. 31, 2012
Loans secured by real estate:
Construction and land development
Residential real estate	1,320	3,231
Commercial real estate	17,036	17,617
Secured by 1-4 family residential properties:
Revolving, open-end loans	28,718	29,947
Secured by first liens	200,899	194,324
Secured by junior liens	17,847	18,504
Secured by multi-family properties	17,456	15,906
Secured by non-farm, non-residential properties	208,996	199,879
Commercial and industrial loans to U.S. addressees	56,013	56,396
Loans to individuals for household, family and other personal expenditures:
Credit card and related plans	3,031	3,199
Other (installment and student loans, etc.)	49,732	49,199
Obligations of states & political subdivisions	28,616	22,586
All other loans	12,689	12,742
Gross Loans	642,353	623,530
Less: Unearned income on loans
Loans, net of unearned income	$ 642,353	$ 623,530

Construction and land development.

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Credit card and related plans.

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Loans and leases receivable, gross, consumer, obligations of states and political subdivisions.

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Loans receivable, residential, real estate.

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Loans receivable, residential, revolving, open-end loans.

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Loans receivable, residential, secured by first liens.

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Loans receivable, residential, secured by junior liens.

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Loans receivable, residential, secured by multi-family properties.

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Other installment and student loans.

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Secured by non-farm, non-residential properties.

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Amount before allowance of commercial loans and leases receivable includes, but not limited to, commercial and industrial loans, agricultural loans, mortgage loans, promissory notes, interbank and other loans to financial institutions, draws against credit facilities, trade financing, lease financings. 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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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for 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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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.

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Amount before allowance of other loans and leases not otherwise specified in the taxonomy. 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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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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