Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Non-cash stock-based compensation expenses	$ 379	$ 571	$ 837	$ 1,229
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Non-cash stock-based compensation expenses	$ 286	$ 417	$ 624	$ 814