Other Comprehensive Income (Loss) Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	$ (818)	$ (3,059)	$ (1,045)	$ (4,768)
Net unrealized loss on securities available-for-sale	227	1,709
Accumulated Other Comprehensive Income (Loss)	(818)	(3,059)	$ (1,045)	$ (4,768)
Other Comprehensive Income (Loss), Net of Tax	$ 227	$ 1,709