Investment Securities Sales and Calls of Available-For-Sale portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
AFS portfolio Sales and Calls [Abstract]
Proceeds from Sale of Available-for-sale Securities	$ 994	$ 38,991	$ 31,567
Available-for-sale Securities, Gross Realized Gains	8	513	174
Available-for-sale Securities, Gross Realized Losses	0	2	0
Proceeds from Sale of Held-to-maturity Securities	0	2,814	0
Held-to-Maturity Securities, Gross Realized Gains	0	43	0
Held-to-Maturity Securities, Gross Realized Losses	$ 0	$ 2	$ 0