Employee Benefit Plans - Components of Net Periodic Pension Costs for Defined Benefit Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Retirement Benefits [Abstract]
Interest cost	$ 899	$ 965	$ 1,174
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Return on plan assets	$ (885)	$ (1,195)	$ (2,328)
Net amortization and deferral costs	$ 265	$ 365	$ 546
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Settlement cost	$ 8,010	$ 4,774	$ 1,357
Defined contribution plans	9,678	9,644	9,103
Net periodic benefit cost	$ 17,967	$ 14,553	$ 9,852