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Supplemental Cash Flow Information - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($) $ in Thousands | 12 Months Ended
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Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Supplemental Cash Flow Information [Abstract] |  |  |
Cash interest paid | $ 4,486 | $ 2,715 | $ 1,941
Income taxes paid | 2 | 2 | 80
Noncash financing and investing activity: |  |  |
Common stock issued for Employee Stock Purchase Plan in settlement of prior year accrued employee contributions |  | 50 | 105
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 |  | 2,386 |
Series C Preferred stock conversions | 20,220 |  |
Accrued sale of common stock, cash received in a subsequent period |  |  | 357
Accrued purchase of fixed assets, cash paid in subsequent period | 1,579 | 2,490 | 3,952
Accrued purchase of project assets, cash paid in subsequent period | $ 3,115 | $ 2,380 | $ 1,797

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