Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Lease, Cost [Abstract]
Operating lease cost	$ 1,517	$ 1,454	$ 4,545	$ 4,688
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	1,522	1,459	4,550	4,675
Right-of-use assets obtained in exchange for lease obligations, Operating leases	$ 2,042	$ 0	$ 2,848	$ 3,441
Weighted Average Remaining Lease Terms, Operating leases	3 years		3 years
Weighted Average Discount Rate, Operating leases	3.84%		3.84%