Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Receivables [Abstract]
Balance at beginning of period	$ 1,523	$ 1,016	$ 1,200	$ 961
Bad debt expense, net of recoveries	192	249	585	408
Accounts written off	(23)	0	(93)	(104)
Balance at end of period	$ 1,692	$ 1,265	$ 1,692	$ 1,265