Discontinued Operations - Summary of Significant Non Cash Operating Items and Capital Expenditures of Discontinued Operations Included in Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Significant non-cash operating items:
Equity in income of unconsolidated affiliate, net of distributions	$ (3,453)	$ (10,225)
Stock-based compensation	$ 3,925	4,516
Discontinued Operations
Significant non-cash operating items:
Depreciation and amortization		16,250
Impairment of long-lived assets		1,401
Equity in income of unconsolidated affiliate, net of distributions		(8,957)
Stock-based compensation		1,157
Significant investing activities:
Investment in property, plant and equipment		$ (19,775)