Investment (Income), Net - Investment (Income), Net (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Investment Income, Net [Abstract]
Interest (income)	$ (3,983)	$ (5,451)
Net (gain) on marketable securities	(5,971)	(6,451)
Dividend (income)	(1,072)	(537)
Investment (income), net	$ (11,026)	$ (12,439)