Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Current tax expense:
Federal	$ 78,542	$ 95,336	$ 4,382
State	22,394	22,365	13,835
Current income tax expense (benefit)	100,936	117,701	18,217
Deferred tax expense	53,252	23,126	82,721
Total income tax expense	$ 154,188	$ 140,827	$ 100,938