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Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | May 31, 2023 | May 31, 2022
--- | --- | ---
Deferred income tax assets related to: |  |
Inventories | $ 18,811 | $ 15,967
Accrued compensation and benefits | 18,331 | 22,224
Accrued other expenses | 21,037 | 21,782
Deferred income and other long-term liabilities | 30,239 | 25,389
Credit and net operating and capital loss carryforwards | 75,366 | 63,368
Net unrealized loss on securities | 3,373 | 9,386
Research and development | 17,360 |
Pension and other postretirement benefits | 11,813 | 15,699
Total Deferred Income Tax Assets | 196,330 | 173,815
Less: valuation allowances | (30,033) | (30,509)
Net Deferred Income Tax Assets | 166,297 | 143,306
Deferred income tax (liabilities) related to: |  |
Depreciation | (123,421) | (91,227)
Amortization of intangibles | (116,763) | (112,349)
Unremitted foreign earnings | (990) | (3,002)
Total Deferred Income Tax (Liabilities) | (241,174) | (206,578)
Deferred Income Tax Assets (Liabilities), Net | $ (74,877) | $ (63,272)

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