Accounts Receivable and Allowance for Doubtful Receivables - Allowance for Doubtful Receivables (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Receivables [Abstract]
Balance at beginning of period	$ 1,020	$ 1,194	$ 1,674
Bad debt expense, net of recoveries	(59)	212	(265)
Accounts written off	(246)	(386)	(215)
Balance at end of period	$ 715	$ 1,020	$ 1,194