Credit Risk Profile Internal Grade (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	$ 483,193	$ 389,956
Multifamily Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	94,706	47,525
Multifamily Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	93,218	46,028
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	1,488	1,497
Multifamily Loans [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Multifamily Loans [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	185,851	198,101
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	181,340	184,850
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	1,890	7,129
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	2,621	6,122
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	5,076	5,070
Construction Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	5,076	5,070
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] | Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	70,599	26,931
Commercial Loan [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	62,419	20,638
Commercial Loan [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	1,065	1,295
Commercial Loan [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	7,115	4,998
Commercial Loan [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	0	0
Commercial Loan [Member] | Unlikely to be Collected Financing Receivable [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	126,527	112,191
One- to four family loans [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	122,689	109,890
One- to four family loans [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	3,838	2,301
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	434	138
Consumer Loan [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	434	137
Consumer Loan [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	$ 0	$ 1