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Supplemental Cash Flow Information - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Debt Conversion [Line Items] |  |  |
Cash interest paid | $ 8,376 | $ 4,091 | $ 4,486
Income taxes paid | 2 | 48 | 2
Noncash financing and investing activity: |  |  |
Noncash reclassification between inventory and project assets | 1,152 |  | 10,793
Acquisition of project assets |  | 16,704 |
Director stock compensation | 104 | 102 | 282
Reclassification of value of executive share-based compensation | 434 |  |
Addition of operating lease liabilities | 899 |  |
Addition of operating lease right-of-use assets | 899 |  |
Cashless warrant exercises | 25,994 |  |
Reclassification to equity of warrant liability for warrant exercises | 9,783 |  |
Accrued purchase of fixed assets, cash paid to be paid in subsequent period | 39 | 71 | 1,579
Accrued purchase of project assets, cash to be paid in subsequent period | $ 502 | 222 | 3,115
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 |

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