SCHEDULE II - Valuation and Qualifying Accounts (Detail) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 1,292	$ 608	$ 1,521
Charged to Costs and Expenses	2,108	959	(254)
Uncollectable Accounts Charged to Allowance	(17)	(275)	(659)
Balance at End of Period	$ 3,383	$ 1,292	$ 608