Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,896)	$ (5,423)
Other comprehensive (loss) income, net of tax:
Change in unrealized loss of securities available-for-sale, net of tax	(5,300)	1,871
Reclassification adjustments for sales of available-for-sale securities, net of tax	1,193	0
Other comprehensive income, net of tax	(4,107)	1,871
Comprehensive loss	(8,003)	(3,552)
Other Comprehensive Income (Loss), Change in unrealized loss of available-for-sale securities, Tax	0	0
Other Comprehensive Income (Loss), Reclassification adjustment for sales of available-for-sale securities, Tax	$ 0	$ 0