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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Schedule II - Valuation and Qualifying Accounts and Reserves      
Allowance for Doubtful Accounts Receivable, Beginning Balance $ 1,027 $ 639 $ 664
Charged to Costs and Expenses   394 46
Recovered from Costs and Expenses (136)    
Deductions [1]   6 71
Allowance for Doubtful Accounts Receivable, Ending Balance 891 1,027 639
Income tax valuation allowance Balance at Beginning of Period 2,106 2,282 2,067
Charged to/ (Recovered from) Costs and Expenses 458 253 515
Deductions 337 429 300
Income tax valuation allowance Balance at End of Period $ 2,227 $ 2,106 $ 2,282
[1] Receivable write-offs