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Unrelease ESOP Shares Excluded from Weighted Average Common Shares Outstanding (Details) | 3 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011
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 | 100,302 | 142,199

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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-Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: 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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