Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Apr. 30, 2023	Apr. 30, 2022
Deferred tax assets:
Deferred compensation	$ 120,361	$ 111,133
Operating lease liability	26,952	35,158
Loss carryforwards	28,707	33,360
Reserves and accruals	21,140	20,887
Allowance for doubtful accounts	7,272	5,645
Deferred revenue	6,436	6,207
Gross deferred tax assets	210,868	212,390
Deferred tax liabilities:
Operating lease, right-of-use, assets	(22,056)	(27,513)
Intangibles and goodwill	(26,310)	(28,388)
Property and equipment	(15,953)	(24,063)
Prepaid expenses	(20,037)	(24,453)
Other	(4,581)	(1,951)
Gross deferred tax liabilities	(88,937)	(106,368)
Valuation allowances	(25,226)	(24,025)
Net deferred tax asset	$ 96,705	$ 81,997