Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	May 31, 2024	May 31, 2023
Deferred income tax assets related to:
Inventories	$ 17,772	$ 18,811
Accrued compensation and benefits	17,649	18,331
Accrued other expenses	19,058	21,037
Deferred income and other long-term liabilities	31,204	30,239
Credit, net operating, interest and capital loss carryforwards	87,590	75,366
Net unrealized loss on securities		3,373
Research and development	33,076	17,360
Pension and other postretirement benefits		11,813
Total Deferred Income Tax Assets	206,349	196,330
Less: valuation allowances	(30,021)	(30,033)
Net Deferred Income Tax Assets	176,328	166,297
Deferred income tax (liabilities) related to:
Depreciation	(132,007)	(123,421)
Amortization of intangibles	(125,553)	(116,763)
Unremitted foreign earnings	(4,055)	(990)
Net unrealized gain on securities	(1,305)
Pension and other postretirement benefits	(1,108)
Total Deferred Income Tax (Liabilities)	(264,028)	(241,174)
Deferred Income Tax Assets (Liabilities), Net	$ (87,700)	$ (74,877)

Deferred tax assets credit net operating interest and capital loss carryforwards.

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Deferred tax assets deferred income and other long-term liabilities.

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Deferred tax assets, tax deferred expense, compensation and benefits, pensions and other postretirement benefits.

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Deferred tax liabilities pension and other postretirement benefits.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

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Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains on trading securities.

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