Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 5,354	$ (2,853)
Other comprehensive loss, net of tax:
Change in unrealized loss of securities available-for-sale, net of tax	(786)	(1,575)
Reclassification adjustments for sales of available-for-sale securities, net of tax	0	58
Total other comprehensive loss, net of tax	(786)	(1,633)
Total comprehensive income (loss), net of tax	$ 4,568	$ (4,486)