Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Receivables [Abstract]
Balance at beginning of period	$ 1,335	$ 954	$ 1,200	$ 961
Bad debt expense, net of recoveries	213	121	393	159
Accounts written off	(25)	(59)	(70)	(104)
Balance at end of period	$ 1,523	$ 1,016	$ 1,523	$ 1,016