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Condensed Consolidated Statements of Operations (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Jan. 31, 2022 | Jan. 31, 2021
Research and Development Expense [Member] |  |
Share-based payment arrangement, expense | $ 1,276 | $ 290
General and Administrative Expense [Member] |  |
Share-based payment arrangement, expense | $ 1,078 | $ 696

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