Deferred Compensation and Retirement Plans - Schedule of Components of Net Periodic Benefits Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets			6.00%	6.00%
Deferred Compensation Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 11,825	$ 11,347	$ 34,305	$ 32,526
Interest cost	4,513	3,435	13,477	10,228
Amortization of actuarial loss	33	184	97	551
Expected return on plan assets	(267)	(272)	(799)	(816)
Net periodic service credit amortization	(101)	(101)	(304)	(304)
Net periodic benefit costs	$ 16,003	$ 14,593	$ 46,776	$ 42,185