SCHEDULE II - Valuation and Qualifying Accounts (Detail) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 803	$ 503	$ 500
Charged to Costs and Expenses	33	483	220
Uncollectable Accounts Charged to Allowance	(493)	(183)	(217)
Balance at End of Period	$ 343	$ 803	$ 503