Restructuring and Other (Income) Expense, Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other Income, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 135
Expense (income)	825
Payments	(772)
Ending Balance	188	$ 135
Loss on deconsolidation of Sustainable Energy Solutions	30,502	(1,177)
Release of contingent liability for Level5 earnout	(2,000)
Restructuring and other (income) expense, net	29,327	(367)	$ (2,616)
Early Retirement And Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	135
Expense (income)	714	810
Payments	(661)	(675)
Ending Balance	188	$ 135
Facility Exit And Other Costs
Restructuring Cost and Reserve [Line Items]
Expense (income)	111
Payments	$ (111)