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Loan Receivable and Allowance for Loan and Lease Losses Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts	0	2		3
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 966
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 93		$ 949
One- to four family loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts		1	1	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 96	$ 43
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 43	$ 96	$ 43
weighted average rate pre modification		12.00%	2.63%	12.00%
Weighted average rate post modification		12.00%	2.63%	12.00%
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%
Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts		1		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 50
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 50		$ 50
weighted average rate pre modification		10.50%		10.50%
Weighted average rate post modification		10.50%		10.50%

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weighted average rate pre modification rates on TDR loans

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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=49124121&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables 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=49124121&loc=SL6953676-111524

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Pre-modification amount of investment in financing receivables 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=49124121&loc=SL6953676-111524

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