Income Taxes - Components of Net Loss, Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Income Tax Disclosure [Abstract]
Domestic	$ (270,280)	$ (189,891)	$ (58,407)
Foreign	2,116	(1,385)	3,415
Net loss before provision for income taxes	$ (268,164)	$ (191,276)	$ (54,992)