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Commitments and Contingencies - Additional Information (Details)
 12 Months Ended
Oct. 31, 2018
USD ($)
Employee
Oct. 31, 2017
USD ($)
Oct. 31, 2016
USD ($)
Commitments And Contingencies [Line Items]      
Capitalized lease obligations $ 341,000 $ 632,000  
Lease Payment Terms 36 months    
Operating Leases, Rent Expense, Net $ 1,200,000 1,600,000 $ 1,800,000
Reserve for performance guarantees 1,100,000 2,200,000  
Loss reserve on service agreements 900,000 $ 1,100,000  
Recorded Unconditional Purchase Obligation $ 64,000,000    
State of Connecticut [Member]      
Commitments And Contingencies [Line Items]      
Number of targeted connecticut employees | Employee 703    
Number of employees committed to hire | Employee 100    
Number of connecticut Employees | Employee 452    
Promossiory note payable for each employee under 703 employee target $ 14,000