Leases - Additional Information (Detail) - USD ($)	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Lessee Lease Description [Line Items]
Leases description	The Company leases certain of its facilities and equipment under operating leases, which are recorded as right-of-use assets and lease liabilities.  The Company’s leases generally have terms of 1 - 5 years, with certain leases including renewal options to extend the leases for additional periods at the Company’s discretion.  At lease inception, all renewal options reasonably certain to be exercised are considered when determining the lease term.  The Company currently does not have leases that include options to purchase or provisions that would automatically transfer ownership of the leased property to the Company.
Leases, renewal options, description	The Company’s leases generally have terms of 1 - 5 years, with certain leases including renewal options to extend the leases for additional periods at the Company’s discretion.
Lessee operating lease, existence of option to extend	true
Variable lease cost	$ 0	$ 0
Rent expense under operating leases			$ 5,900,000	$ 5,300,000
Minimum [Member]
Lessee Lease Description [Line Items]
Leases terms	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Leases terms	5 years