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Segment Data - Financial Information for Reportable Segments (Parenthetical) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 03, 2022 | May 31, 2025 | May 31, 2024 | May 31, 2023 | May 31, 2025 | May 31, 2024 | May 31, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Write-down of intangible assets associated with GTI |  |  |  |  | $ 13,659 | $ 11,787 |  | $ 11,877
Increase in fair value of contingent liability |  |  |  |  | 4,536 |  |  |
Write down an investment |  | $ 5,000 | $ 11,077 |  |  |  |  |
Pre-tax charge completion of pension lift-out transaction |  |  | 8,010 | $ 4,774 |  |  |  |
Restructuring and other expense (income), net |  |  |  |  | 3,228 | 825 |  |
Impairment of long-lived assets |  |  |  |  | $ 50,813 | $ 32,975 | [1] | 484
Net gain on divestiture of Brazilian operations of Workhorse |  |  | 2,780 |  |  |  |  |
Net gain related to sale-leaseback transaction |  |  |  | $ 2,063 |  |  |  |
ArtiFlex |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Pre-tax loss on sale of equity | $ 16,059 |  |  |  |  |  |  | $ 16,059
Percent of ownership interest held in unconsolidated affiliates |  | 50.00% |  | 50.00% | 50.00% |  |  | 50.00%
Sustainable Energy Solutions Joint Venture |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Non-recurring loss in equity income |  | $ 3,387 |  |  |  |  |  |
Restructuring and other expense (income), net |  |  | 30,502 |  |  |  |  |
Impairment of long-lived assets |  |  | $ 32,203 |  |  |  |  |
GTI |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Write-down of intangible assets associated with GTI |  | $ 50,050 |  |  |  |  |  |
[1] | Significant pre-tax impairment charges include $32,203 in the fourth quarter of fiscal 2024 due to the deconsolidation of our former SES operating segment.

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