CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (288,702)	$ (279,696)	$ (268,839)
Other comprehensive income (loss)
Unrealized gain (loss) on available-for-sale marketable securities, net of tax	1,084	(178)	1,763
Total Comprehensive loss	$ (287,618)	$ (279,874)	$ (267,076)