Restructuring and Other Expense, Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other Income, Net (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Restructuring Cost and Reserve [Line Items]
Beginning Balance				$ 188
Expense				1,856
Payments				(1,642)
Ending Balance		$ 402		402
Loss on sale of assets				95
Stock-based compensation		2,924	$ 2,602	12,787	$ 13,294
Restructuring and other expense, net		5,374	$ 698	9,152	$ 704
Ragasco
Restructuring Cost and Reserve [Line Items]
Change in fair value of Ragasco earnout	[1]			4,536
Former CEO
Restructuring Cost and Reserve [Line Items]
Stock-based compensation	[2]			2,665
Early Retirement And Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance				188
Expense				1,407
Payments				(1,193)
Ending Balance		$ 402		402
Other Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Expense				449
Payments				$ (449)

[1] 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 N – Acquisitions” for additional information.

[2] 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