Net Revenues and Long-Lived Assets of Company (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net revenues	$ 8,206	$ 7,445
Long-lived assets	484	310
UNITED STATES
Segment Reporting Information [Line Items]
Net revenues	8,206	7,445
Long-lived assets	97	178
Foreign
Segment Reporting Information [Line Items]
Long-lived assets	$ 387	$ 132