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Supplemental Cash Flow Information - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Debt Conversion [Line Items]      
Cash interest paid $ 4,091 $ 4,486 $ 2,715
Income taxes paid 48 2 2
Noncash financing and investing activity:      
Common stock issued for Employee Stock Purchase Plan in settlement of prior year accrued employee contributions     50
Noncash reclass between inventory and project assets   10,793 7,282
Assumption of debt in conjunction with asset acquisition     2,289
Acquisition of project assets 16,704   2,386
Accrued purchase of fixed assets, cash paid in subsequent period 71 1,579 2,490
Accrued purchase of project assets, cash paid in subsequent period 222 3,115 $ 2,380
Series C Preferred Stock [Member]      
Noncash financing and investing activity:      
Preferred stock share conversions 15,491 $ 20,220  
Preferred share modification (6,047)    
Series D Preferred Stock [Member]      
Noncash financing and investing activity:      
Preferred stock share conversions $ 31,183