Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Schedule Of Income Taxes [Line Items]
Deferred tax assets, valuation allowance increase (decrease)	$ (3,000,000.0)	$ (12,700,000)	$ 1,200,000
Changes in deferred tax assets valuation allowance, amount		(9,700,000)
Undistributed earnings of foreign subsidiaries	831,000,000.0
Unrecognized tax benefits liability	10,856,000	14,023,000	10,566,000	$ 10,682,000
Unrecognized tax benefits, reductions resulting from resolution	3,000,000.0
Unrecognized tax benefits, interest on income taxes accrued	2,700,000	2,100,000	1,800,000
Unrecognized tax benefits, income tax penalties accrued	400,000	200,000
Recognized interest expense	800,000	$ 0	$ 400,000
Internal Revenue Service (IRS)
Schedule Of Income Taxes [Line Items]
Net operating loss carryforward	800,000
State and Local Jurisdiction
Schedule Of Income Taxes [Line Items]
Net operating loss carryforward	23,700,000
Foreign Tax Jurisdiction
Schedule Of Income Taxes [Line Items]
Net operating loss carryforward	$ 93,900,000