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Loan Receivable and Allowance for Loan and Lease Losses Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts | 0 | 2 |  | 3
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  |  |  | $ 966
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | $ 93 |  | $ 949
One- to four family loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 | 1 | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  |  | $ 96 | $ 43
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | $ 43 | $ 96 | $ 43
weighted average rate pre modification |  | 12.00% | 2.63% | 12.00%
Weighted average rate post modification |  | 12.00% | 2.63% | 12.00%
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 0 |  | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  | $ 0 |  | $ 873
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | $ 0 |  | $ 856
weighted average rate pre modification |  | 0.00% |  | 6.60%
Weighted average rate post modification |  | 0.00% |  | 6.60%
Business [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 1 |  | 1
Financing Receivable, Modifications, Pre-Modification Recorded Investment |  |  |  | $ 50
Financing Receivable, Modifications, Post-Modification Recorded Investment |  | $ 50 |  | $ 50
weighted average rate pre modification |  | 10.50% |  | 10.50%
Weighted average rate post modification |  | 10.50% |  | 10.50%

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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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