Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020
Lease Cost [Abstract]
Operating lease cost	$ 6,461	$ 6,523
Supplemental cash flow information related to leases was as follows:
Cash paid for amounts included in the measurement of lease liabilities, Operating cash flows from operating leases	6,432	6,483
Right-of-use assets obtained in exchange for lease obligations, Operating leases	$ 5,367	$ 5,009
Weighted Average Remaining Lease Terms, Operating leases	4 years
Weighted Average Discount Rate, Operating leases	3.74%