Property and Equipment, Net - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands		Apr. 30, 2021	Apr. 30, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 427,082	$ 392,984
Less: accumulated depreciation and amortization		(295,304)	(250,256)
Property and equipment, net		131,778	142,728
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	[1]	290,417	261,970
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross		89,276	85,208
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross		44,033	42,741
Automobiles
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 3,356	$ 3,065

[1] Depreciation expense for capitalized software was $25.4 million, $18.8 million and $14.6 million during fiscal 2021, 2020 and 2019, respectively. The net book value of the Company’s computer software costs included in property and equipment, net was $85.6 million and $86.3 million as of April 30, 2021 and 2020, respectively