Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Current tax expense:
Federal	$ 85,207	$ 78,542	$ 95,336
State	20,764	22,394	22,365
Current income tax expense (benefit)	105,971	100,936	117,701
Deferred tax expense	59,958	53,252	23,126
Total income tax expense	$ 165,929	$ 154,188	$ 140,827