Loans and Leases - Risk Category of Loans by Class of Loan Based on Most Recent Analysis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Commercial and Other Loans, Gross	$ 17,251	$ 16,725
Commercial Real Estate, Gross	41,495	44,107
Construction and Land Development	746	623
Total Loans	59,492	61,455
Recorded Investment in Loan, risk analysis, Current	58,570	60,534
Recorded Investment in Loan, risk analysis, Past Due 30-59 days	4	10
Recorded Investment in Loan, risk analysis, Past Due 60-89 days	36
Recorded Investment in Loan, risk analysis, Past Due 90 days or more	9
Recorded Investment in Loan, risk analysis, Non-accrual	873	911
Total Loans	59,492	61,455
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial and Other Loans, Gross	17,216	16,675
Commercial Real Estate, Gross	33,461	35,302
Construction and Land Development	395	272
Total Loans	51,072	52,249
Recorded Investment in Loan, risk analysis, Current	51,032	52,249
Recorded Investment in Loan, risk analysis, Past Due 30-59 days	4
Recorded Investment in Loan, risk analysis, Past Due 60-89 days	36
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual
Total Loans	51,072	52,249
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial and Other Loans, Gross
Commercial Real Estate, Gross	3,273	3,936
Construction and Land Development
Total Loans	3,273	3,936
Recorded Investment in Loan, risk analysis, Current	3,273	3,936
Recorded Investment in Loan, risk analysis, Past Due 30-59 days
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual
Total Loans	3,273	3,936
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial and Other Loans, Gross	35	50
Commercial Real Estate, Gross	4,761	4,869
Construction and Land Development	351	351
Total Loans	5,147	5,270
Recorded Investment in Loan, risk analysis, Current	4,265	4,349
Recorded Investment in Loan, risk analysis, Past Due 30-59 days		10
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more	9
Recorded Investment in Loan, risk analysis, Non-accrual	873	911
Total Loans	5,147	5,270
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial and Other Loans, Gross
Commercial Real Estate, Gross
Construction and Land Development
Total Loans
Recorded Investment in Loan, risk analysis, Current
Recorded Investment in Loan, risk analysis, Past Due 30-59 days
Recorded Investment in Loan, risk analysis, Past Due 60-89 days
Recorded Investment in Loan, risk analysis, Past Due 90 days or more
Recorded Investment in Loan, risk analysis, Non-accrual
Total Loans

Financing receivable risk analysis recorded investment in current.

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- Definition

Financing receivable risk analysis recorded investment in equal to greater than ninety days past due.

+ References

No definition available.

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- Definition

Financing receivable risk analysis recorded investment in nonaccrual status.

+ References

No definition available.

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- Definition

Financing receivable risk analysis recorded investment in sixty to eighty nine days past due.

+ References

No definition available.

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- Definition

Financing receivable risk analysis recorded investment in thirty to fifty nine days past due.

+ References

No definition available.

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- Definition

Loans and leases receivable gross carrying amount commercial and other loans.

+ References

No definition available.

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- Definition

Loans receivable gross carrying amount construction and land development.

+ References

No definition available.

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- Definition

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.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a, b

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5066-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.1(c))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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