Investment Securities Text Figures (Details)		Dec. 31, 2016 USD ($)		Mar. 31, 2016 USD ($)
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		34		13
Available-for-sale		$ 60,024,000		$ 56,180,000
Percentage Available-for-sale Securities		81.20%
Held-to-maturity	[1]	$ 13,913,000		15,311,000
Percentage Held-to-maturity Securities		18.80%
Trading Securities		$ 0
Mortgage-backed securities
Schedule of Investments [Line Items]
Number of AFS securities in Unrealized Loss Positions, greater than or equal to 12 months		1
Available-for-sale		$ 37,512,000		20,170,000
Other
Schedule of Investments [Line Items]
Number of AFS securities in Unrealized Loss Positions, greater than or equal to 12 months		1
Available-for-sale		$ 9,864,000	[2]	$ 9,941,000	[3]

[1] * The carrying amount and amortized cost are the same for all held-to-maturity securities, as no OTTI has been recorded.

[2] (1) CRA fund comprised of over 95% agency securities.

[3] (1) Primarily comprised of CRA fund of over 95% agency securities.