Summary of Allowance for Doubtful Accounts Receivable (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Receivables [Abstract]
Beginning balance	$ 774	$ 1,202
Additions (recoveries)	46	127
Write-offs	(196)	(301)
Ending balance	$ 624	$ 774