Income Taxes - Components of Net Loss, Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Domestic	$ (282,036)	$ (270,280)	$ (189,891)
Foreign	3,132	2,116	(1,385)
Loss before provision for income taxes	$ (278,904)	$ (268,164)	$ (191,276)