Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Receivables [Abstract]
Balance at beginning of period	$ 715	$ 1,020	$ 1,194
Bad debt expense, net of recoveries	1,044	(59)	212
Accounts written off	(798)	(246)	(386)
Balance at end of period	$ 961	$ 715	$ 1,020