Loan Receivable and Allowance for Loan and Lease Losses Text Figures (Details)	9 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 7,600,000	$ 7,800,000
Financing Receivable, Modifications, Number of Contracts	0
Number of Mortgage Loans in Process of Foreclosure	22
Mortgage Loans in Process of Foreclosure, Amount	$ 3,800,000
Loans and Leases Receivable, Related Parties	4,500,000	4,400,000
Loans and Leases Receivable, Related Parties, Additions	1,500,000
Loans and Leases Receivable, Related Parties, Collections	1,400,000
Financing Receivable, Recorded Investment, Nonaccrual Status	8,497,000	13,950,000
Other non-performing asset	2,300,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 1,166,000	$ 1,008,000
Number of Real Estate Properties	8	7
Loans Receivable Held-for-sale, Amount	$ 16,103,000	$ 2,495,000
Number of Modified Loan Subsequently Defaulted	0
Financing Receivable, Recorded Investment, Past Due	$ 14,229,000	14,458,000
Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 6,000,000	$ 5,600,000
Financing Receivable, Modifications, Number of Contracts	13	11
Nonperforming Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 1,600,000	$ 2,200,000
Loans Receivable Held-for-sale, Amount	1,200,000
Fair Value, Inputs, Level 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets		1,008,000
otherrealestateownedresidential	877,000	718,000
Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,421,000	3,896,000
Financing Receivable, Recorded Investment, Past Due	2,429,000	4,774,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,004,000	5,338,000
Financing Receivable, Recorded Investment, Past Due	$ 5,320,000	$ 4,299,000