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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, 2022
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net Amount     $ (806) $ 1,640
Foreign currency translation adjustments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount $ (1,006) $ 577 (951) 1,372
Tax Expense 0 0 0 0
Net Amount (1,006) 577 (951) 1,372
Other comprehensive gain before reclassifications        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount 100 184 199 368
Tax Expense (27) (50) (54) (100)
Net Amount 73 134 145 268
Other comprehensive (loss) income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Pre-tax Amount (906) 761 (752) 1,740
Tax Expense (27) (50) (54) (100)
Net Amount $ (933) $ 711 $ (806) $ 1,640