Segment Information - Revenues by Geographic Locations (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 123,394	$ 130,484	$ 69,585
United States
Segment Reporting Information [Line Items]
Total revenues	63,289	60,290	58,393
South Korea
Segment Reporting Information [Line Items]
Total revenues	58,432	68,341	8,161
Europe
Segment Reporting Information [Line Items]
Total revenues	$ 1,673	$ 1,853	$ 3,031