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Unrelease ESOP Shares Excluded from Weighted Average Common Shares Outstanding (Details) | 3 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Weighted Average Number of Shares Outstanding Reconciliation [Abstract] |  |
Post 1992 shares of the employee stock ownership plan that have not been committed to be released | 57,681 | 100,302

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- Definition Number of employee stock ownership plan (ESOP) shares that have not been committed to be released determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6418601&loc=d3e17400-113927 + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration