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Restructuring and Impairment - Additional Information (Details)
12 Months Ended
Apr. 12, 2019
USD ($)
Employee
Nov. 30, 2016
MW
Nov. 29, 2016
MW
Oct. 31, 2019
USD ($)
Rate
Oct. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Restructuring Cost And Reserve [Line Items]            
Reduction in force of employess | Employee 135          
Reduction in force of employee percentage 30.00%          
Restructuring charges $ 0       $ 0 $ 1,355,000
Business restructuring, date       Nov. 30, 2016    
Restructuring and Related Cost, Expected Number of Positions Eliminated       96    
Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date Percent | Rate       17.00%    
Restructuring activity, production rate | MW   25 50      
Product Sales [Member]            
Restructuring Cost And Reserve [Line Items]            
Restructuring charges       $ 2,800,000