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Summary of Significant Accounting Policies - Comprehensive Income (Loss) by Component (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2020
Foreign Currency Translation (Loss) Income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount $ 577 $ (619) $ 1,372 $ (1,886)
Tax Expense 0 0 0 0
Net Amount 577 (619) 1,372 (1,886)
Defined Benefit Pension Plan        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount 184 110 368 295
Tax Expense (50) (50) (100) (100)
Net Amount 134 60 268 195
Amounts reclassified to earnings included in "Selling, general and administrative"        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount 0 140 0 140
Tax Expense 0 0 0 0
Net Amount 0 140 0 140
Accumulated Other Comprehensive (Loss) Income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount 761 (369) 1,740 (1,451)
Tax Expense (50) (50) (100) (100)
Net Amount $ 711 $ (419) $ 1,640 $ (1,551)