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