Loan Receivable and Allowance for Loan and Lease Losses Non-performing loans (Details) (USD $)	9 Months Ended	12 Months Ended
	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 2,606,000	$ 5,011,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	3,934,000	1,369,000
Financing Receivable, Recorded Investment, Nonaccrual Status	8,549,000	12,559,000
Non accrual 90 days past due	4,800,000
Impaired and non performing TDR loans	3,700,000	3,000,000
Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	7,000	1,000
One- to four family loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,089,000	2,301,000
Multifamily Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,053,000	2,240,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,850,000	7,024,000
Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 1,550,000	$ 993,000