Loan Receivable and Allowance for Loan and Lease Losses Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	2	1	3	3
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 93	$ 429	$ 966	$ 1,832
Financing Receivable, Modifications, Post-Modification Recorded Investment	93	428	949	1,694
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%
One- to four family loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts		1	1	2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	43	429	43	913
Financing Receivable, Modifications, Post-Modification Recorded Investment	43	428	43	975
weighted average rate pre modification	12.00%	6.50%	12.00%	7.03%
Weighted average rate post modification	12.00%	4.50%	12.00%	5.06%
Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	0	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	50	0	50	919
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 50	$ 0	$ 50	$ 719
weighted average rate pre modification	10.50%	0.00%	10.50%	6.00%
Weighted average rate post modification	10.50%	0.00%	10.50%	6.00%

Weighted average rate post modification on TDR loans

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- Definition

weighted average rate pre modification rates on TDR loans

+ References

No definition available.

+ Details

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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=28368275&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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