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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 | 6 Months Ended
--- | --- | ---
Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2022 | Apr. 30, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | $ 1,641 | $ 1,226 | $ 3,050 | $ 2,618
Costs of Revenues |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | 185 | 141 | 338 | 318
General and Administrative Expenses |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | 1,350 | 1,054 | 2,528 | 2,237
Research and Development Expense |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | $ 106 | $ 31 | $ 184 | $ 63

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