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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	Jun. 30, 2014	Dec. 31, 2013
Financial Assets
Securities	$ 108,884	$ 103,301
Restricted securities	1,636	1,804
Bank owned life insurance	11,141	10,978
Accrued interest receivable	1,258	1,302
Carrying Amount [Member]
Financial Assets
Cash and short-term investments	19,322	31,508
Securities	108,884	103,301
Restricted securities	1,636	1,804
Loans, net	357,484	346,449
Bank owned life insurance	11,141	10,978
Accrued interest receivable	1,258	1,302
Financial Liabilities
Deposits	451,198	450,711
Other borrowings	6,039	6,052
Trust preferred capital notes	9,279	9,279
Accrued interest payable	151	177
Fair Value [Member]
Financial Assets
Cash and short-term investments	19,322	31,508
Securities	108,884	103,301
Restricted securities	1,636	1,804
Loans, net	365,034	353,874
Bank owned life insurance	11,141	10,978
Accrued interest receivable	1,258	1,302
Financial Liabilities
Deposits	451,504	451,377
Other borrowings	6,137	6,095
Trust preferred capital notes	10,351	9,399
Accrued interest payable	151	177
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments	19,322	31,508
Securities	6	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	108,878	103,296
Restricted securities	1,636	1,804
Loans, net
Bank owned life insurance	11,141	10,978
Accrued interest receivable	1,258	1,302
Financial Liabilities
Deposits	335,325	326,955
Other borrowings
Trust preferred capital notes
Accrued interest payable	151	177
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets
Cash and short-term investments
Securities
Restricted securities
Loans, net	365,034	353,874
Bank owned life insurance
Accrued interest receivable
Financial Liabilities
Deposits	116,179	124,422
Other borrowings	6,137	6,095
Trust preferred capital notes	10,351	9,399
Accrued interest payable

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- Definition

Fair value portion of accrued expenses.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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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.

+ References

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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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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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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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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-Publisher FASB

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Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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