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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	Mar. 31, 2014	Dec. 31, 2013
Financial Assets
Securities	$ 110,561	$ 103,301
Bank owned life insurance	11,052	10,978
Carrying Amount [Member]
Financial Assets
Cash and short-term investments	34,123	31,508
Securities	110,561	103,301
Restricted securities	1,636	1,804
Loans, net	349,250	346,449
Bank owned life insurance	11,052	10,978
Accrued interest receivable	1,305	1,302
Financial Liabilities
Deposits	461,689	450,711
Other borrowings	6,046	6,052
Trust preferred capital notes	9,279	9,279
Accrued interest payable	160	177
Fair Value [Member]
Financial Assets
Cash and short-term investments	34,123	31,508
Securities	110,561	103,301
Restricted securities	1,636	1,804
Loans, net	356,181	353,874
Bank owned life insurance	11,052	10,978
Accrued interest receivable	1,305	1,302
Financial Liabilities
Deposits	462,107	451,377
Other borrowings	6,103	6,095
Trust preferred capital notes	10,251	9,399
Accrued interest payable	160	177
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments	34,123	31,508
Securities	7	5
Restricted securities
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	110,554	103,296
Restricted securities	1,636	1,804
Bank owned life insurance	11,052	10,978
Accrued interest receivable	1,305	1,302
Financial Liabilities
Deposits	341,538	326,955
Accrued interest payable	160	177
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments
Loans, net	356,181	353,874
Financial Liabilities
Deposits	120,569	124,422
Other borrowings	6,103	6,095
Trust preferred capital notes	$ 10,251	$ 9,399

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Fair value portion of accrued expenses.

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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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