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Project Assets - Additional Information (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2019 USD ($) | Oct. 31, 2019 USD ($) ProjectAsset | Oct. 31, 2018 USD ($) ProjectAsset | Oct. 31, 2017 USD ($)
Project Assets [Line Items] |  |  |  |
Long-term project assets | $ 144,115,000 | $ 144,115,000 | $ 99,600,000 |
Number of project assets | ProjectAsset |  | 6 | 5 |
Sale leaseback transaction, net book value | 59,200,000 | $ 59,200,000 | $ 28,600,000 |
Long-term gross project asset values | 160,000,000 | 160,000,000 | 107,700,000 |
Project assets accumulated depreciation | 15,900,000 | $ 15,900,000 | 8,100,000 |
Project assets estimated useful life |  | 20 years |  |
Long-term project assets construction in progress | $ 84,900,000 | $ 84,900,000 | 71,000,000 |
Impairment charges |  | 20,360,000 | 0 | $ 0
Impairment on project asset |  |  | 500,000 |
Depreciation expense |  | 6,800,000 | $ 4,100,000 | $ 4,100,000
Triangle Street Project [Member] |  |  |  |
Project Assets [Line Items] |  |  |  |
Project assets estimated useful life | 5 years |  |  |
Impairment charges | $ 14,400,000 |  |  |
Bolthouse Farms Project [Member] |  |  |  |
Project Assets [Line Items] |  |  |  |
Impairment charges |  | $ 3,100,000 |  |
Minimum [Member] |  |  |  |
Project Assets [Line Items] |  |  |  |
Project assets estimated useful life |  | 5 years |  |
Maximum [Member] |  |  |  |
Project Assets [Line Items] |  |  |  |
Project assets estimated useful life |  | 7 years |  |

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