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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Schedule II - Valuation and Qualifying Accounts and Reserves      
Allowance for Doubtful Accounts Receivable, Beginning Balance $ 1,401 $ 891 $ 1,027
Charged to Costs and Expenses 268 575  
Recovered from Costs and Expenses     (136)
Deductions [1] 24 65  
Allowance for Doubtful Accounts Receivable, Ending Balance 1,645 1,401 891
Income tax valuation allowance Balance at Beginning of Period 2,164 2,227 2,106
Charged to/ (Recovered from) Costs and Expenses 49 50 458
Deductions 342 113 337
Income tax valuation allowance Balance at End of Period $ 1,871 $ 2,164 $ 2,227
[1] Receivable write–offs