Loan Receivable and Allowance for Loan and Lease Losses Credit Risk Profile Internal Grade (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	$ 410,435	$ 389,956
Multifamily Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	54,098	47,525
Multifamily Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net		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	1,492	1,497
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	52,606	0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	190,573	198,101
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net		184,850
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	2,118	7,129
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	4,539	6,122
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	183,916	0
Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	5,075	5,070
Construction Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net		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] | Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	5,075	0
Business [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	41,194	26,931
Business [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	35,055	20,638
Business [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	942	1,295
Business [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	5,197	4,998
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
One- to four family loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	119,142	112,191
One- to four family loans [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	116,506	109,890
One- to four family loans [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	2,636	2,301
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	353	138
Consumer Loan [Member] | Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	343	137
Consumer Loan [Member] | Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable, Net	$ 10	$ 1