Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands  | 
3 Months Ended | |
|---|---|---|
Jan. 31, 2025  | 
Jan. 31, 2024  | 
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| Research and Development Expense [Member] | ||
| Non-cash stock-based compensation expenses | $ 397 | $ 489 | 
| General and Administrative Expense [Member] | ||
| Non-cash stock-based compensation expenses | $ 658 | $ 771 | 
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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