Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) - Components of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized loss on securities available-for-sale	$ (307)	$ (1,045)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net	(1,633)	738
Net unrealized loss on securities available-for-sale	$ (1,940)	$ (307)