Loans (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 300,229	$ 289,247
Less undisbursed portion of loans in process	(7,142)	(4,306)
Principal loan balance	293,087	284,941
Deferred loan origination fees, net	341	202
Allowance for loan losses	(4,922)	(4,736)	(4,182)
Loans, net	288,506	280,407
Real Estate Portfolio Segment \| Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	107,029	108,097
Real Estate Portfolio Segment \| Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	10,309	9,607
Real Estate Portfolio Segment \| Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	14,423	12,753
Real Estate Portfolio Segment \| Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	76,496	68,731
Real Estate Portfolio Segment \| Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,715	3,299
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	21,956	18,612
Principal loan balance	21,956	18,612
Deferred loan origination fees, net	(9)	(10)
Allowance for loan losses	(1,446)	(1,223)	(1,160)
Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal loan balance	33,486	31,186
Deferred loan origination fees, net	0	0
Allowance for loan losses	(289)	(291)	(399)
Other Consumer \| Home Equity and Second Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	34,815	36,962
Other Consumer \| Automobile Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	23,983	21,922
Other Consumer \| Loans Secured by Savings Accounts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,138	770
Other Consumer \| Unsecured Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	3,541	3,191
Other Consumer \| Other Consumer Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 4,824	$ 5,303

Loans and Leases Receivable Principal Balance

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

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- Definition

Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

+ References

No definition available.

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- 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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524

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-Name Accounting Standards Codification

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- Definition

Amount after allowance and 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 and loans held for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7)

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- Definition

Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

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