Accrued Liabilities (Detail) - USD ($) $ in Thousands	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Schedule of Accrued Liabilities [Line Items]
Accrued compensation and benefits	$ 416	$ 298
Accrued payroll taxes	147	0
Accrued commissions	219	303
Accrued property taxes	2	8
Accrued warranty	24	41	$ 51
Accrued other	47	78
Accrued Customer Deposit and Accrued Liabilities Current, Total	$ 855	$ 728