Income Taxes - Components of Net Loss, Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Income Tax Disclosure [Abstract]
Domestic	$ (291,153)	$ (282,036)	$ (270,280)
Foreign	3,427	3,132	2,116
Loss before provision for income taxes	$ (287,726)	$ (278,904)	$ (268,164)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details