Share-Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 2,650	$ 1,917	$ 4,459	$ 2,208
Research and Development
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	888	337	1,513	530
General and Administrative
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total share-based compensation expense	$ 1,762	$ 1,580	$ 2,946	$ 1,678

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