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, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Components of net periodic benefit cost
Service cost	$ 168	$ 236	$ 504	$ 708
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	$ 614	$ 492	$ 1,841	$ 1,475
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	$ (776)	$ (924)	$ (2,328)	$ (2,774)
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	$ 474	$ 601	$ 1,422	$ 1,806
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)	Operating Income (Loss)
Settlement charges	$ 0	$ 786	$ 0	$ 786
Net periodic benefit cost	$ 480	$ 1,191	$ 1,439	$ 2,001