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Federal Home Loan Bank Advances - Advances from FHLB (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Total	$ 10,000	$ 15,742
April 2012 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed-rate advances, Maturing, for current year		5,000
Fixed-rate advances, Maturing Rate for current year	2.30%
June 2012 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed-rate advances, Maturing, for current year		742
Fixed-rate advances, Maturing Rate for current year	2.05%
January 2014 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed-rate advances, Maturing, after two years	5,000	5,000
Fixed-rate advances, Maturing Rate after two years	3.12%
May 2014 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed-rate advances, Maturing, after two years	$ 5,000	$ 5,000
Fixed-rate advances, Maturing Rate after two years	3.06%

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Amount of federal home loan bank advances. Advances are loans from the federal home loan bank system to a member (shareholder).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due within one year of the Balance Sheet date.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 3

-Section VII.3

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from two to three years of the Balance Sheet date.

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-Publisher AICPA

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Amount of federal home loan bank advances maturing in the third fiscal year following the latest fiscal year.

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Amount of federal home loan bank advances maturing in the next fiscal year following the latest fiscal year.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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