Investment Securities Text Figures (Details)		Sep. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		12	13
Available-for-sale		$ 53,750,000	$ 56,180,000
Percentage Available-for-sale Securities		78.80%
Held-to-maturity	[1]	$ 14,458,000	15,311,000
Percentage Held-to-maturity Securities		21.20%
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		$ 32,618,000	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		$ 10,170,000	$ 9,941,000

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