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Debt Financing (Narrative) (Details) - USD ($)
12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Apr. 14, 2020
Debt Instrument [Line Items]        
Variable rate term loan (compeer) $ 3,490,291      
Debt covenant, minimum debt service coverage ratio 1.25      
Debt covenant, minimum working capital $ 8,250,000      
Annual capital expenditures 5,000,000      
Gain on debt extinguishment 712,200 $ 0 $ 0  
PPP Loan        
Debt Instrument [Line Items]        
Debt instrument, face amount       $ 712,200
Gain on debt extinguishment $ 712,000      
Revolving Credit Facility        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 3.33%      
Variable rate term loan (compeer) $ 0      
Maximum borrowing capacity 10,000,000      
Current borrowing capacity 3,400,000      
Notes Payable to Banks | Term Revolving Loan        
Debt Instrument [Line Items]        
Debt instrument, face amount 20,000,000      
Variable rate term loan (compeer) 499,000      
Notes Payable to Banks | 2020 Term Loan        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 6,000,000      
Effective interest rate (as a percent) 3.70%      
Variable rate term loan (compeer) $ 3,000,000      
Periodic principal payment $ 250,000      
Notes Payable to Banks | WATER Term Revolving Loan Member        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 3.33%      
Notes Payable to Banks | Letter of Credit | Term Revolving Loan        
Debt Instrument [Line Items]        
Effective interest rate (as a percent) 1.50%      
Variable rate term loan (compeer) $ 0      
75 Percent of Net Income        
Debt Instrument [Line Items]        
Debt covenant, minimum working capital $ 8,250,000      
Debt covenant, distribution to members as percentage of net income (as a percent) 75.00%      
100 Percent of Net Income        
Debt Instrument [Line Items]        
Debt covenant, minimum working capital $ 11,000,000      
Debt covenant, distribution to members as percentage of net income (as a percent) 100.00%      
100 Percent of Net Income | Notes Payable to Banks | Term Loan        
Debt Instrument [Line Items]        
Debt covenant, distribution to members term, outstanding balance $ 0      
London Interbank Offered Rate (LIBOR) | Revolving Credit Facility        
Debt Instrument [Line Items]        
Basis spread on variable rate 3.25%      
London Interbank Offered Rate (LIBOR) | Notes Payable to Banks | Term Revolving Loan        
Debt Instrument [Line Items]        
Basis spread on variable rate 3.25%      
Wall Street Journal's Prime Rate | Notes Payable to Banks | 2020 Term Loan        
Debt Instrument [Line Items]        
Basis spread on variable rate 0.45%