Income Taxes - Components of Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Income Tax Disclosure [Line Items]
Income before taxes	$ 364,819	$ 137,094	$ 46,325
United States
Income Tax Disclosure [Line Items]
Income before taxes	320,353	106,059	106,850
Foreign
Income Tax Disclosure [Line Items]
Income before taxes	$ 44,466	$ 31,035	$ (60,525)