Loan Receivable and Allowance for Loan and Lease Losses Non performing TDRs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 429	$ 1,832
Financing Receivable, Modifications, Post-Modification Recorded Investment	428	1,694
Loans modified int. rate concession of 2%	429
Financing Receivables, Modifications Pre Modification Recorded Investment			4,718
Loan modifications recorded investment			3,806
Financing Receivables, Modifications Number of Contracts			8
Number of loans modified	1	3
One- to four family loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivables, Modifications Pre Modification Recorded Investment		913	1,415
Loan modifications recorded investment	428	975	536
weighted average rate pre modification	6.50%	7.03%	6.52%
Weighted average rate post modification	4.50%	5.06%	6.31%
Financing Receivables, Modifications Number of Contracts			2
Number of loans modified	1	2
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivables, Modifications Pre Modification Recorded Investment			1,061
Loan modifications recorded investment			1,060
weighted average rate pre modification			12.02%
Weighted average rate post modification			12.02%
Financing Receivables, Modifications Number of Contracts			2
Business [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivables, Modifications Pre Modification Recorded Investment		919	2,242
Loan modifications recorded investment		$ 719	$ 2,210
weighted average rate pre modification		6.00%	7.44%
Weighted average rate post modification		6.00%	7.44%
Financing Receivables, Modifications Number of Contracts			4
Number of loans modified		1