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, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Components of net periodic benefit cost
Service cost	$ 269	$ 318	$ 806	$ 954
Interest cost	420	438	1,261	1,315
Expected return on plan assets	(931)	(1,019)	(2,792)	(3,056)
Amortization of:
Unrecognized net loss	639	840	1,919	2,519
Settlement Charges	750		750
Net periodic benefit cost	$ 1,147	$ 577	$ 1,944	$ 1,732