Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Research and Development Expense [Member]
Non-cash stock-based compensation expenses	$ 358	$ 462	$ 1,172	$ 1,471
General and Administrative Expense [Member]
Non-cash stock-based compensation expenses	$ 497	$ 717	$ 1,727	$ 2,228