Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Apr. 30, 2024
Deferred income tax assets:
Allowances on accounts and notes receivable	$ 4,399	$ 5,973
Accrued payroll and related costs	2,973	2,606
Insurance reserves	6,678	4,568
Inventory costs	6,181	6,495
Deferred compensation	10,338	10,043
Equity compensation	4,172	3,903
Acquisition related costs	1,812	1,454
Net operating loss carry-forwards	1,645	1,928
Disallowed interest expense	2,114	2,097
Investment in partnerships	32,751	30,449
Operating lease liability	83,581	63,151
Other deferred tax assets, net	4,934	4,382
Total deferred income tax assets	161,578	137,049
Less: Valuation allowance	(11,801)	(12,541)
Total deferred income tax assets, net of valuation allowance	149,777	124,508
Deferred income tax liabilities:
Amortization of intangible assets	(55,963)	(41,663)
Operating lease right-of-use assets	(80,251)	(61,283)
Depreciation	(64,167)	(57,667)
Derivative instruments	(130)	(2,780)
Other deferred tax liabilities, net	(1,181)	(1,923)
Total deferred income tax liabilities	(201,692)	(165,316)
Deferred income tax liabilities	$ (51,915)	$ (40,808)