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Fair Value Measurements - Carrying Values and Estimated Fair Values of Company's Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financial Assets
Securities	$ 103,301	$ 89,456
Bank owned life insurance	10,978	10,609
Carrying Amount [Member]
Financial Assets
Cash and short-term investments	31,508	31,028
Securities	103,301	89,456
Restricted stock	1,804	1,974
Loans held for sale		503
Loans, net	346,449	370,519
Bank owned life insurance	10,978	10,609
Accrued interest receivable	1,302	1,459
Financial Liabilities
Deposits	450,711	466,917
Other borrowings	6,052	6,076
Trust preferred capital notes	9,279	9,279
Accrued interest payable	177	286
Fair Value [Member]
Financial Assets
Cash and short-term investments	31,508	31,028
Securities	103,301	89,456
Restricted stock	1,804	1,974
Loans held for sale		503
Loans, net	353,874	375,941
Bank owned life insurance	10,978	10,609
Accrued interest receivable	1,302	1,459
Financial Liabilities
Deposits	451,377	468,870
Other borrowings	6,095	6,220
Trust preferred capital notes	9,399	8,735
Accrued interest payable	177	286
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments	31,508	31,028
Securities	5	3
Restricted stock
Loans held for sale
Loans, net
Bank owned life insurance
Accrued interest receivable
Financial Liabilities
Deposits
Other borrowings
Trust preferred capital notes
Accrued interest payable
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments
Securities	103,296	89,453
Restricted stock	1,804	1,974
Loans held for sale		503
Loans, net
Bank owned life insurance	10,978	10,609
Accrued interest receivable	1,302	1,459
Financial Liabilities
Deposits	326,955	306,719
Other borrowings
Trust preferred capital notes
Accrued interest payable	177	286
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments
Securities
Restricted stock
Loans held for sale
Loans, net	353,874	375,941
Bank owned life insurance
Accrued interest receivable
Financial Liabilities
Deposits	124,422	162,151
Other borrowings	6,095	6,220
Trust preferred capital notes	9,399	8,735
Accrued interest payable

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Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

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-SubTopic 10

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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