Restructuring and Other (Income) Expense, Net - Additional Information (Detail) - USD ($)	12 Months Ended
	May 31, 2026	May 31, 2025	May 31, 2024	May 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and other expense, net		$ 2,600,000	$ 0	$ (4,200,000)
Net book value		548,200,000	$ 474,800,000
Voluntary Retirement Program
Restructuring Cost and Reserve [Line Items]
Additional incremental early retirement and severance costs		1,800,000
Manufacturing Facility
Restructuring Cost and Reserve [Line Items]
Additional incremental early retirement and severance costs		$ 800,000
Manufacturing Facility | Forecast
Restructuring Cost and Reserve [Line Items]
Additional incremental early retirement and severance costs	$ 0