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Loan Receivable and Allowance for Loan and Lease Losses Credit Risk Profile Internal Grade (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Mar. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 601,576 | $ 483,193
Multifamily Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 106,184 | 94,706
Multifamily Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 103,986 | 93,218
Multifamily Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Multifamily Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 2,198 | 1,488
Multifamily Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Multifamily Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 267,448 | 185,851
Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 253,186 | 181,340
Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 3,864 | 1,890
Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 10,398 | 2,621
Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Commercial Real Estate [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,012 | 5,076
Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 5,012 | 5,076
Construction Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Construction Loans [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 76,867 | 70,599
Business [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 69,110 | 62,419
Business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 1,295 | 1,065
Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 6,462 | 7,115
Business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
Business [Member] | Loss [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 0 | 0
One- to four family loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 145,980 | 126,527
One- to four family loans [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 142,983 | 122,689
One- to four family loans [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 2,997 | 3,838
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 85 | 434
Consumer Loan [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | 85 | 434
Consumer Loan [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans Receivable, Net | $ 0 | $ 0

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