Provision for Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Current:
Federal		$ (437)
Foreign, state and other	$ 6	6
Deferred:
Federal	346	69
Foreign, state and other	105	10
Provision (benefit) for income tax expense	$ 457	$ (352)