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Summary of Significant Accounting Policies - Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Tax (Expense) Benefit | $ (51) | $ (50)
Foreign Currency Translation Loss |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax Amount | 795 | (1,267)
Tax (Expense) Benefit | 0 | 0
Net Amount | 795 | (1,267)
Defined Benefit Pension Plan |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax Amount | 185 | 185
Tax (Expense) Benefit | (51) | (50)
Net Amount | 134 | 135
Accumulated Other Comprehensive (Loss) Income |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax Amount | 980 | (1,082)
Tax (Expense) Benefit | (51) | (50)
Net Amount | $ 929 | $ (1,132)

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