Information in Regard to Troubled Debt Restructurings that Occurred During Period (Detail) (Troubled Debt Restructuring, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012 Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Pre-Modification Outstanding Balance	$ 113
Post-Modification Outstanding Balance	112
Residential
Financing Receivable, Modifications [Line Items]
Number of Contracts	1
Pre-Modification Outstanding Balance	88
Post-Modification Outstanding Balance	87
Home Equity and Second Mortgage
Financing Receivable, Modifications [Line Items]
Number of Contracts	1
Pre-Modification Outstanding Balance	25
Post-Modification Outstanding Balance	25
Construction
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Pre-Modification Outstanding Balance	0
Post-Modification Outstanding Balance	0
Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Pre-Modification Outstanding Balance	0
Post-Modification Outstanding Balance	0
Commercial Business
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Pre-Modification Outstanding Balance	0
Post-Modification Outstanding Balance	0
Other Consumer
Financing Receivable, Modifications [Line Items]
Number of Contracts	0
Pre-Modification Outstanding Balance	0
Post-Modification Outstanding Balance	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524

+ Details

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- Definition

Amount of investment in financing receivables (after modification) modified by troubled debt restructurings.

+ References

+ Details

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- Definition

Amount of investment in financing receivables (before modification) modified by troubled debt restructurings.

+ References

+ Details

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