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
	May 31, 2022	May 31, 2021
Components of net periodic benefit cost
Service cost	$ 236	$ 269
Interest cost	492	420
Expected return on plan assets	(925)	(931)
Amortization of:
Unrecognized net loss	602	640
Settlement charge	0	0
Net periodic benefit cost	$ 405	$ 398