Equity Incentive Plan and Stock Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2026	Jul. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 9,517	$ 4,579
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	1,183	455
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 8,334	$ 4,124

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details