Segment Operations - Reconciliation from Earnings Before Income Taxes to Adjusted EBITDA from Continuing Operations (Detail) - USD ($) $ in Thousands		3 Months Ended
		Aug. 31, 2024	Aug. 31, 2023
Segment Reporting [Abstract]
Earnings before income taxes		$ 30,790	$ 35,791
Less: net loss attributable to noncontrolling interest		(245)
Net earnings before income taxes attributable to controlling interest		31,035	35,791
Interest expense, net		489	1,074
EBIT	[1]	31,524	36,865
Corporate costs eliminated at Separation			9,672
Restructuring and other expense, net		1,158
Separation costs			2,410
Loss on extinguishment of debt			1,534
Adjusted EBIT	[1]	32,682	50,481
Depreciation and amortization		11,830	12,075
Stock-based compensation		3,925	3,359
Adjusted EBITDA from continuing operations		$ 48,437	$ 65,915

[1] EBIT and adjusted EBIT are not used by management to evaluate our performance, engage in financial and operational planning, or to determine incentive compensation. Instead, they are included as subtotals in the reconciliation of earnings before income taxes to adjusted EBITDA from continuing operations, which management uses to assess operating performance.