Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (236,161)	$ (203,848)	$ (129,434)
Other comprehensive loss:
Unrealized loss on available-for-sale securities	(71)	0	0
Foreign currency translation adjustments	(1,814)	(10,025)	(6,728)
Other comprehensive loss	(1,885)	(10,025)	(6,728)
Total comprehensive loss	$ (238,046)	$ (213,873)	$ (136,162)