Revenue from Contracts with Customers - Additional Information (Details)	12 Months Ended
	Feb. 29, 2020 USD ($) Segment	Feb. 28, 2019 USD ($)
Revenue From Contract With Customer [Abstract]
Number of reportable segments | Segment	3
Contract with customer, right to recover product	$ 1,544,000	$ 1,962,000
Contract with customer, refund liability	3,779,000	4,415,000
Contract with customer, asset, net	0	0
Contract with customer, liability	0	0
Revenue, remaining performance obligation, amount	$ 0	$ 0