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Debt and Finance Lease Liabilities - Other Debt (Details)
Jul. 21, 2020
USD ($)
installment
Apr. 10, 2020
USD ($)
Nov. 02, 2018
USD ($)
installment
Oct. 31, 2020
USD ($)
Debt Instrument [Line Items]        
Number of installment payments | installment     4  
Insurance Premium Financing Agreement        
Debt Instrument [Line Items]        
Long term debt       $ 1,341,000
Stated interest rate 2.60%      
Number of installment payments | installment 2      
Installment payment, amount $ 677,000      
Total interest cost $ 13,000      
Vendor Financing Agreement Maturing May 2023        
Debt Instrument [Line Items]        
Long term debt       132,000
Stated interest rate   2.94%    
Installment payment, amount   $ 46,000    
Debt instrument, face amount   $ 174,000    
Vendor Financing Agreement Maturing June 2022        
Debt Instrument [Line Items]        
Long term debt       $ 673,000
Stated interest rate     9.83%  
Installment payment, amount     $ 183,000  
Debt instrument, face amount     $ 1,256,000