Postretirement Benefits - Changes in Benefit Obligation (Detail) - Postretirement Benefits - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
May 31, 2026 |
May 31, 2025 |
May 31, 2024 |
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| Domestic | |||
| Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Benefit obligation at beginning of year | $ 1,663 | $ 1,621 | |
| Interest cost | 49 | 83 | $ 87 |
| Benefit payments | (746) | (135) | |
| Actuarial (gains) losses | (22) | 94 | |
| Benefit Obligation at End of Year | 944 | 1,663 | 1,621 |
| Non-U.S. Plans | |||
| Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Benefit obligation at beginning of year | 24,557 | 26,058 | |
| Service cost | 936 | 1,672 | 2,259 |
| Interest cost | 1,089 | 1,251 | 1,550 |
| Benefit payments | (648) | (568) | |
| Actuarial (gains) losses | (701) | (3,635) | |
| Currency exchange rate changes | (108) | (221) | |
| Benefit Obligation at End of Year | $ 25,125 | $ 24,557 | $ 26,058 |
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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