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, 2024	Nov. 30, 2023	Nov. 30, 2024	Nov. 30, 2023
Components of net periodic benefit cost
Service cost	$ 166	$ 168	$ 498	$ 504
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	$ 649	$ 614	$ 1,947	$ 1,841
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	$ (755)	$ (776)	$ (2,265)	$ (2,328)
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	$ 436	$ 474	$ 1,308	$ 1,422
Net periodic benefit cost	$ 496	$ 480	$ 1,488	$ 1,439