Earnings Per Common Share - Computation of Basic and Diluted Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Numerator (basic & diluted):
Net earnings from continuing operations attributable to controlling interest	$ 35,243	$ 125,751	$ 157,948
Denominator:
Denominator for basic EPS from continuing operations - Weighted average common shares	49,195	48,566	49,940
Effect of dilutive securities	1,153	820	1,053
Denominator for diluted EPS from continuing operations - Weighted average common shares	50,348	49,386	50,993
Basic EPS from continuing operations	$ 0.72	$ 2.59	$ 3.16
Diluted EPS from continuing operations	$ 0.7	$ 2.55	$ 3.1