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Benefit Plans - Schedule of Share-Based Compensation Reflected in Consolidated Statement of Operations and Comprehensive Loss (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jan. 31, 2021 | Jan. 31, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |
Allocated Share-based Compensation Expense | $ 1,371 | $ 477
Cost of Revenues [Member] |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |
Allocated Share-based Compensation Expense | 178 | 117
General and Administrative Expenses [Member] |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |
Allocated Share-based Compensation Expense | 1,163 | 339
Research and Development Expense [Member] |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |
Allocated Share-based Compensation Expense | $ 30 | $ 21

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