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Project Assets - Additional Information (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2018 project MW | Jul. 31, 2017 project MW | Oct. 31, 2022 USD ($) MW | Oct. 31, 2021 USD ($) | Oct. 31, 2020 USD ($) | Oct. 31, 2022 USD ($) project item MW | Oct. 31, 2021 USD ($) item | Oct. 31, 2020 USD ($) | Oct. 31, 2021 USD ($)
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Number of project assets | item |  |  |  |  |  | 8 | 8 |  |
Total number of projects | project |  |  |  |  |  | 3 |  |  |
Sale leaseback transaction, net book value |  |  | $ 125,200 | $ 96,400 |  | $ 125,200 | $ 96,400 |  | $ 96,400
Long-term project assets construction in progress |  |  | 107,700 | 126,800 |  | 107,700 | 126,800 |  | 126,800
Project asset depreciation |  |  |  |  |  | 14,200 | 13,700 | $ 12,900 |
Impairment of property, plant and equipment and project assets |  |  |  |  |  | 1,782 | 5,024 | $ 2,417 |
Impairment charges |  |  |  |  |  | 22,100 | 2,800 |  | 24,900
Long Term Project Assets |  |  | 232,886 | 223,277 |  | 232,886 | 223,277 |  | 223,277
Hartford |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Impairment charges |  |  | 800 |  |  |  |  |  |
Power Purchase Agreement | NEW YORK |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Total Power to be purchased | MW |  | 39.8 |  |  |  |  |  |  |
Number of projects executed | project | 1 |  |  |  |  |  |  |  |
Total number of projects | project | 3 | 3 |  |  |  |  |  |  |
Power purchased | MW | 7.4 |  |  |  |  |  |  |  |
Number of projects not executed | project | 2 |  |  |  |  |  |  |  |
Impairment charges |  |  |  | 1,800 |  |  |  |  |
Triangle Street Project [Member] |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Impairment of property, plant and equipment and project assets |  |  |  |  | $ 2,400 |  |  |  |
Impairment charges |  |  |  | 400 |  |  |  |  |
Long Term Project Assets |  |  |  | 5,600 |  |  | $ 5,600 |  | $ 5,600
Toyota |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Long Term Project Assets |  |  | $ 21,900 |  |  | $ 21,900 |  |  |
Toyota Project [Member] |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Power capacity under construction phase | MW |  |  |  |  |  | 2.3 |  |  |
Impairment charges |  |  |  | $ 2,800 |  | $ 22,100 |  |  |
CT RFP-1, Hartford, CT | Hartford |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  | 7.4 |  |  |  |  |  |
SCEF - Hartford, CT | Hartford |  |  |  |  |  |  |  |  |
Project Assets [Line Items] |  |  |  |  |  |  |  |  |
Capacity of plant | MW |  |  | 1.0 |  |  |  |  |  |

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