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	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Components of net periodic benefit cost
Service cost	$ 1,075	$ 1,271	$ 1,088
Interest cost	1,682	1,754	2,254
Expected return on plan assets	(3,723)	(4,074)	(4,198)
Amortization of:
Unrecognized net loss	2,558	3,358	2,036
Settlement charge	1,097	1,619
Net periodic benefit cost	2,689	3,928	1,180
Other changes in Plan Assets and Projected Benefit Obligation Recognized in Other comprehensive Income
Net actuarial loss (gain)	1,396	(1,588)	13,371
Amortization of net actuarial loss	(3,655)	(4,977)	(2,036)
Net of recognized in Other comprehensive Income	(2,259)	(6,565)	11,335
Total recognized in net periodic pension cost and other comprehensive income	$ 430	$ (2,637)	$ 12,515