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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, 2024 | Aug. 31, 2023 | Aug. 31, 2024 | Aug. 31, 2023
Components of net periodic benefit cost |  |  |  |
Service cost | $ 166 | $ 154 | $ 332 | $ 336
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 | $ 622 | $ 1,298 | $ 1,227
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) | $ (760) | $ (1,510) | $ (1,552)
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 | $ 481 | $ 872 | $ 948
Net periodic benefit cost | $ 496 | $ 497 | $ 992 | $ 959

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