Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Research and Development Expense [Member]
Non-cash stock-based compensation expenses	$ 462	$ 520	$ 1,471	$ 1,517
General and Administrative Expense [Member]
Non-cash stock-based compensation expenses	$ 717	$ 697	$ 2,228	$ 1,990