Segment Operations - Reconciliation from Earnings Before Income Taxes to Adjusted EBITDA from Continuing Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2024		Nov. 30, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Stock-based compensation	$ 5,937	$ 6,175	$ 9,862		$ 10,691
Former CEO
Segment Reporting, Revenue Reconciling Item [Line Items]
Stock-based compensation	$ 2,665		$ 2,665	[1]

[1] Represents non-cash stock-based compensation expense related to the accelerated vesting of certain outstanding equity awards upon retirement of our former CEO, effective November 1, 2024.