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Restructuring and Other Expense, Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other Expense, Net (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 03, 2024 | May 31, 2025 | May 31, 2024 | May 31, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Beginning Balance |  |  | $ 188 | $ 135 |  |
Expense (Income) |  |  | $ 3,228 | 825 |  |
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Restructuring and other expense, net |  |  |
Payments |  |  | $ (2,731) | (772) |  |
Ending Balance |  |  | 685 | 188 |  | $ 135
Net loss on sale of assets |  |  | 95 | 30,502 | [1] |
Release of contingent liability for Level5 earnout |  | $ 7,139 |  | (2,000) | [2] |
Stock-based compensation |  |  | 16,186 | 16,688 |  | 19,178
Restructuring and other expense, net |  |  | 10,524 | 29,327 | [3] | (367)
Ragasco [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Change in fair value of Ragasco earnout | [4] |  | 4,536 |  |  |
Former CEO |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Stock-based compensation | [5] |  | 2,665 |  |  |
Early Retirement And Severance |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Beginning Balance |  |  | 188 | 135 |  |
Expense (Income) |  |  | 1,993 | 714 |  |
Payments |  |  | (1,596) | (661) |  |
Ending Balance |  |  | 585 | 188 |  | $ 135
Other Restructuring Charges |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expense (Income) |  |  | 1,235 |  |  |
Payments |  |  | (1,135) |  |  |
Ending Balance |  |  | $ 100 |  |  |
Facility Exit and Other Costs |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expense (Income) |  |  |  | 111 |  |
Payments |  |  |  | $ (111) |  |
[1] | On May 29, 2024, we entered into an agreement with Hexagon and contributed the net assets of our Sustainable Energy Solutions business to a newly-formed joint venture in which we retained a 49% noncontrolling interest. As a result, we recognized a pre-tax loss of $30,502 within restructuring and other expense, net, including closing costs.
[2] | During fiscal 2024, we reversed amounts accrued for the anticipated payout under the final earnout opportunity associated with the Level5 acquisition.
[3] | Significant pre-tax restructuring charges include a loss of $30,502 in the fourth quarter of fiscal 2024 due to the deconsolidation of our former Sustainable Energy Solutions operating segment during the fourth quarter of fiscal 2024.
[4] | Reflects the change in fair value of the contingent liability associated with the Ragasco earnout arrangement covering the 12-month period ended December 31, 2024. See “Note P – Acquisitions” for additional information.
[5] | Reflects non-cash stock-based compensation expense related to the accelerated vesting of certain outstanding equity awards held by our former CEO upon his retirement, effective November 1, 2024.

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