Stock-Based Compensation Expense Included in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 25,925	$ 28,673	$ 40,114
Stock-based compensation expense, included in restructuring expense		(50)	630
Total stock-based compensation cost	25,925	28,673	40,744
Income tax (benefit)	(3,627)	(4,234)	(5,621)
Total stock-based compensation cost, net of tax	22,298	24,439	35,123
SG&A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 25,925	$ 28,723	$ 40,114