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Accrued Loss Reserves (Detail) - USD ($) $ in Thousands | May 31, 2022 | May 31, 2021
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Schedule Of Accrued Liabilities [Line Items] |  |
Accrued losses | $ 24,508 | $ 29,054
Accrued Loss Reserves - Noncurrent | 35,935 | 36,627
Accrued product liability and other loss reserves |  |
Schedule Of Accrued Liabilities [Line Items] |  |
Accrued losses | 16,003 | 18,296
Accrued Loss Reserves - Noncurrent | 26,226 | 26,614
Accrued warranty reserves |  |
Schedule Of Accrued Liabilities [Line Items] |  |
Accrued losses | 7,450 | 9,429
Accrued Loss Reserves - Noncurrent | 3,455 | 3,746
Accrued environmental reserves |  |
Schedule Of Accrued Liabilities [Line Items] |  |
Accrued losses | 1,055 | 1,329
Accrued Loss Reserves - Noncurrent | $ 6,254 | $ 6,267

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- Definition Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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