Property and Equipment, Net - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 536,819	$ 498,871
Less: accumulated depreciation and amortization	(374,970)	(336,995)
Property and equipment, net	161,849	161,876
Depreciation expense for capitalized software	36,500	29,300	$ 28,000
Net book value of capitalized software	127,300	121,900
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	425,012	383,701
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	71,468	73,980
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	36,962	37,844
Automobiles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,377	$ 3,346