Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Oct. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment	$ 3,371	$ 2,779
Less: Accumulated depreciation and amortization	1,818	1,610
Property and equipment, net	1,553	1,169
Lab Equipment
Property, Plant and Equipment [Line Items]
Property and equipment	2,760	2,191
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment	62	62
Computer Software
Property, Plant and Equipment [Line Items]
Property and equipment	146	146
Office Furniture
Property, Plant and Equipment [Line Items]
Property and equipment	141	141
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 262	$ 239

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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