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Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Apr. 30, 2021
Oct. 31, 2020
Debt Instrument [Line Items]    
Finance lease, liability $ 134 $ 38
Deferred finance costs (1,413) (3,737)
Unamortized debt discount   (5,152)
Total debt and financing obligations 82,908 165,355
Current portion of long-term debt and financing obligations (8,575) (21,366)
Long-term debt and financing obligations 74,333 143,989
Orion Energy Partners Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit   80,000
Connecticut Green Bank Loan [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 4,800 4,800
Connecticut Green Bank Loan (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 4,699 5,065
Liberty Bank Term Loan Agreement (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 8,507 9,549
Finance Obligation for Sale-Lease Back Transactions [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 48,633 49,274
State Of Connecticut [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 9,041 9,454
Fifth Third Bank Term Loan Agreement (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit $ 8,507 9,549
Liberty Bank Promissory Note (PPP Note) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit   $ 6,515