Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Income Tax [Line Items]
Net operating loss carryforwards	$ 169,100,000
Foreign capital loss carryforwards	24,100,000
Total Valuation Allowances	30,021,000	$ 30,033,000
Unrecognized tax benefits that would impact effective tax rate, if recognized	4,400,000	2,900,000	$ 5,600,000
Accrued interest and penalties related to unrecognized tax benefits	3,000,000	2,200,000	$ 3,200,000
Unremitted foreign earnings	285,600,000
Deferred income tax liability	4,055,000	$ 990,000
Remaining unremitted foreign earnings	1,200,000,000
Provision for deferred income taxes	$ 0
Minimum tax rate on reported profits	15.00%
State
Income Tax [Line Items]
Net operating loss carryforwards	$ 700,000
Net operating loss carryforwards beginning expiration year	2025
Foreign
Income Tax [Line Items]
Tax credit carryforwards	$ 38,300,000
Tax credit carryforwards expiration year	2034
Foreign Net Operating Loss Carryforwards
Income Tax [Line Items]
Net operating loss carryforwards	$ 95,000,000
Net operating loss carryforwards beginning expiration year	2025
Net operating loss carryforwards subject to expiration	$ 17,200,000
Net operating loss carryforwards indefinite carry forward period	151,900,000
Interest Deduction Carryforwards
Income Tax [Line Items]
Net operating loss carryforwards	$ 74,100,000