Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2021	May 31, 2020
Lease Cost [Abstract]
Operating lease cost	$ 1,639	$ 1,627
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	1,630	$ 1,612
Right-of-use assets obtained in exchange for lease obligations, Operating leases	$ 2,603
Weighted Average Remaining Lease Terms, Operating leases	4 years
Weighted Average Discount Rate, Operating leases	3.74%