Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022
Lease, Cost [Abstract]
Operating lease cost	$ 1,418	$ 1,515	$ 2,851	$ 3,028
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	1,421	1,517	2,862	3,028
Right-of-use assets obtained in exchange for lease obligations, Operating leases	$ 779	$ 0	$ 779	$ 806
Weighted Average Remaining Lease Terms, Operating leases	3 years		3 years
Weighted Average Discount Rate, Operating leases	4.03%		4.03%