Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Research and Development Expense [Member]
Non-cash share-based compensation expenses	$ 520	$ 492	$ 1,009	$ 998
General and Administrative Expense [Member]
Non-cash share-based compensation expenses	$ 740	$ 735	$ 1,511	$ 1,292