Share-Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 2,581	$ 1,460	$ 7,040	$ 3,668
Research and Development
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	854	776	2,367	1,306
General and Administrative
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 1,727	$ 684	$ 4,673	$ 2,362

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