Contingencies and Accrued Losses - Changes in Accrued Warranty Balances (Detail) - USD ($) $ in Thousands		3 Months Ended
		Aug. 31, 2024	Aug. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Beginning Balance		$ 11,621	$ 11,776
Deductions	[1]	(6,143)	(7,407)
Provision charged to expense		5,712	7,633
Ending Balance		$ 11,190	$ 12,002

[1] Primarily claims paid during the period.