Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Research and Development Expense [Member]
Non-cash stock-based compensation expenses	$ 417	$ 520	$ 814	$ 1,009
General and Administrative Expense [Member]
Non-cash stock-based compensation expenses	$ 571	$ 740	$ 1,229	$ 1,511