Reconciliation of Income Taxes Computed at the U.S. Federal Statutory Tax Rate to Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Components Of Deferred Income Tax Assets And Liabilities [Line Items]
Tax at U.S. statutory rate	$ (3,004)	$ (4,629)	$ 12,643
Permanent differences	273	325	179
Global intangible low-taxed income (GILTI)	7,082	6,482	1,501
Foreign derived intangible income deduction (FDII)	(376)	(643)	(1,308)
Foreign rate differential	(3,951)	(3,742)	215
Subpart F income	1,178	152	397
Tax-effect from stock-based compensation	2,256	1,946	(462)
Provision for state income taxes, net of federal benefit	(2,693)	18	1,517
Non-deductible acquisition expenses		7,187
Tax credits	(7,739)	(6,709)	(2,527)
Impact of tax rate changes			583
Change in tax-related uncertainties	1,896	278	3
Changes in valuation allowances	(534)	355	85
Research expenditures deduction	(293)	(365)	(112)
Other	1,021	173	(814)
Income tax (benefit) expense	$ (4,884)	$ 828	$ 11,900