Loan Receivable and Allowance for Loan and Lease Losses Past due financing receivable (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	$ 4,707	$ 3,823
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	444	1,313
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,927	8,988
Financing Receivable, Recorded Investment, Past Due	11,078	14,124
Financing Receivable, Recorded Investment, Current	424,456	375,832
Loans Receivable, Net	435,534us-gaap_LoansReceivableNet	389,956us-gaap_LoansReceivableNet
One- to four family loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,126	244
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	888
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	3,011	1,863
Financing Receivable, Recorded Investment, Past Due	4,137	2,995
Financing Receivable, Recorded Investment, Current	123,280	109,196
Loans Receivable, Net	127,417	112,191
Multifamily Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	444
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	437	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,053	2,240
Financing Receivable, Recorded Investment, Past Due	1,490	2,684
Financing Receivable, Recorded Investment, Current	62,648	44,841
Loans Receivable, Net	64,138	47,525
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	3,581	3,133
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	292
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,115	3,891
Financing Receivable, Recorded Investment, Past Due	4,696	7,316
Financing Receivable, Recorded Investment, Current	195,638	190,785
Loans Receivable, Net	200,334	198,101
Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Recorded Investment, Current	5,074	5,070
Loans Receivable, Net	5,074	5,070
Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	131
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	741	993
Financing Receivable, Recorded Investment, Past Due	741	1,124
Financing Receivable, Recorded Investment, Current	37,503	25,807
Loans Receivable, Net	38,244	26,931
Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0	2
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	7	2
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	7	1
Financing Receivable, Recorded Investment, Past Due	14	5
Financing Receivable, Recorded Investment, Current	313	133
Loans Receivable, Net	$ 327	$ 138

Financing receivables that are less than 60 days past due but more than 29 days past due.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524

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- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

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- Definition

Financing receivables that are current.

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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