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Loan Receivable and Allowance for Loan and Lease Losses Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 | Sep. 30, 2014 USD ($)
One- to four family loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 |  | 1 |
Financing Receivable, Modifications, Pre-Modification Recorded Investment | $ 96 |  |  |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 96 |  |  |
weighted average rate pre modification | 2.63% |  |  |
Weighted average rate post modification | 2.63% |  |  |
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 |  | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | $ 873 |  | $ 873
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | $ 856 |  | $ 856
weighted average rate pre modification |  | 6.60% |  | 6.60%
Weighted average rate post modification |  | 6.60% |  | 6.60%

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- Definition weighted average rate pre modification rates on TDR loans + References No definition available. + Details
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- Definition 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=49124121&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables 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=49124121&loc=SL6953676-111524 + Details
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