Property and Equipment, Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 601,327	$ 536,819
Less: accumulated depreciation and amortization	(427,717)	(374,970)
Property and equipment, net	173,610	161,849
Depreciation expense for capitalized software	41,000	36,500	$ 29,300
Net book value of capitalized software	144,000	127,300
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	485,901	425,012
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	71,485	71,468
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,332	36,962
Automobiles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,609	$ 3,377