Pension Plan - Summary of Pension Expense Composed of Components Included in Cost of Goods Sold and Selling, General and Administrative Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Components of net periodic benefit cost
Service cost	$ 236	$ 269	$ 708	$ 806
Interest cost	492	420	1,475	1,261
Expected return on plan assets	(924)	(931)	(2,774)	(2,792)
Amortization of:
Unrecognized net loss	601	639	1,806	1,919
Settlement charge	786	750	786	750
Net periodic benefit cost	$ 1,191	$ 1,147	$ 2,001	$ 1,944