Loan and Lease Losses Text Figures (Details)	12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)		Mar. 31, 2014 USD ($)
Financing Receivable, Modifications [Line Items]
Modified Loan Subsequently Defaulted	$ 0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 429,000	$ 1,691,000
Financing Receivable, Modifications, Number of Contracts	2	4
FNMA & 3rd party loans excluded from financial statements	$ 28,100,000	$ 30,600,000		$ 33,600,000
Loans Pledged as Collateral	38,300,000
Financing Receivable, Individually Evaluated for Impairment	19,565,000	16,380,000	[1]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	590,000	605,000	[2]
Loans and Leases Receivable, Gross	584,294,000	482,051,000	[3]
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 500,000	600,000
Number of loans past due 90 days or more still accruing	0
Decrease in non-accrual loans	$ 5,600,000
Percentage decrease in non-accrual loans	66.20%
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 13,950,000	8,395,000
Financing Receivable, Modifications, Recorded Investment	7,800,000	8,200,000
Impaired and non performing TDR loans	2,000,000	$ 4,000,000
Prior Period Reclassification Adjustment	701,000
Other non-performing asset	3,500,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 1,008,000			$ 4,341,000
Number of Real Estate Properties	7	10
Loans Receivable Held-for-sale, Amount	$ 2,495,000	$ 2,724,000	[4]
Number of TDR loans on accrual status	11	12
TDR Loans on Accrual Status	$ 5,600,000	$ 4,600,000
Loans and Leases Receivable, Related Parties	4,400,000	4,200,000
Loans and Leases Receivable, Related Parties, Additions	1,300,000
Loans and Leases Receivable, Related Parties, Proceeds	1,100,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 860,000
Financing Receivable, Modifications, Number of Contracts	0	1
Financing Receivable, Individually Evaluated for Impairment	$ 6,294,000	$ 2,621,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	21,000	76,000
Loans and Leases Receivable, Gross	272,497,000	186,504,000	[3]
Financing Receivable, Recorded Investment, Nonaccrual Status	5,338,000	$ 2,817,000
One- to four family loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts		1
Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0	$ 788,000
Financing Receivable, Modifications, Number of Contracts	0	2
Financing Receivable, Individually Evaluated for Impairment	$ 6,866,000	$ 5,356,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	474,000	12,000
Loans and Leases Receivable, Gross	71,277,000	70,765,000	[5]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 3,896,000	$ 861,000

[1] (2) March 31, 2015 balances have been restated from previously reported results for the $701 thousand reclassification of negative escrow balances from Other Assets to Loans Receivable a

[2] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[3] (1) March 31, 2015 and 2014 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[4] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[5] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.