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		6 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022
Components of net periodic benefit cost
Service cost	$ 154	$ 236	$ 336	$ 472
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)
Interest cost	$ 622	$ 491	$ 1,227	$ 983
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)
Expected return on plan assets	$ (760)	$ (925)	$ (1,552)	$ (1,850)
Amortization of:
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)
Unrecognized net loss	$ 481	$ 603	$ 948	$ 1,205
Net periodic benefit cost	$ 497	$ 405	$ 959	$ 810