Loans and Allowance for Loan Losses - Troubled Debt Restructuring Loan Information (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012 Commercial real estate contracts	Mar. 31, 2013 Residential real estate contracts	Mar. 31, 2013 Home equity loans contracts	Mar. 31, 2013 Consumer contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans	5	1	6	14
Pre-Modification Outstanding Recorded Investment	$ 4,559	$ 34	$ 361	$ 161
Post-Modification Outstanding Recorded Investment	$ 3,041	$ 23	$ 243	$ 99

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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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