Debt - Other Instruments (Details)					1 Months Ended				12 Months Ended
	Aug. 18, 2023 USD ($)	May 19, 2023 USD ($) MW	Dec. 07, 2020 USD ($)	Nov. 30, 2020 USD ($)	Apr. 30, 2023 USD ($) position	Jan. 31, 2019 USD ($) position	Nov. 30, 2015 USD ($)	Oct. 31, 2015 USD ($) position	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)	Oct. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)
Debt Instrument [Line Items]
Repayments of long term debt									$ 47,830,000	$ 9,544,000	$ 98,642,000
Orion Energy Partners Investment Agent, LLC Credit Facility
Debt Instrument [Line Items]
Repayments Of Debt			$ 87,300,000
Debt instrument prepayment premium			4,000,000.0	$ 14,900,000
Remaining deferred finance expense			7,100,000
Orion Energy Partners Investment Agent, LLC Credit Facility | Senior Secured Credit Facility
Debt Instrument [Line Items]
Long-term line of credit												$ 200,000,000.0
Orion Energy Partners Investment Agent, LLC Credit Facility | Maximum
Debt Instrument [Line Items]
Debt instrument prepayment premium			$ 4,000,000.0
Connecticut Green Bank Loan (Bridgeport Fuel Cell Project)
Debt Instrument [Line Items]
Long-term line of credit										3,507,000
Connecticut Green Bank Loan (Bridgeport Fuel Cell Project) | Subordinated Credit Agreement
Debt Instrument [Line Items]
Repayment of long term loan		$ 3,500,000
Liberty Bank Term Loan Agreement (Bridgeport Fuel Cell Project)
Debt Instrument [Line Items]
Long-term line of credit										5,382,000
Fifth Third Bank Term Loan Agreement (Bridgeport Fuel Cell Project)
Debt Instrument [Line Items]
Long-term line of credit										5,382,000
Fifth Third Bank Term Loan Agreement (Bridgeport Fuel Cell Project) | Senior credit agreement
Debt Instrument [Line Items]
Repayment of long term loan		$ 8,400,000
Fifth Third Bank Term Loan Agreement (Bridgeport Fuel Cell Project) | Senior credit agreement | Bridgeport Fuel Cell, LLC
Debt Instrument [Line Items]
Capacity Of Plant | MW		14.9
Connecticut Green Bank Loan
Debt Instrument [Line Items]
Repayments of long term debt									4,800,000
Long-term line of credit										4,800,000
Subordinated Credit Agreement | Connecticut Green Bank Loans | Bridgeport Fuel Cell, LLC
Debt Instrument [Line Items]
Capacity Of Plant | MW		14.9
Back Leverage Financing | Liberty Lender
Debt Instrument [Line Items]
Interest rate (as a percent)	6.75%
Connecticut Green Bank Loans
Debt Instrument [Line Items]
Repayments Of Debt	$ 3,000,000.0
Finance obligation for sale-leaseback transactions
Debt Instrument [Line Items]
Long-term line of credit									18,814,000	56,625,000
Finance obligations for sale leaseback agreements
Debt Instrument [Line Items]
Future payments included in financing obligation for the remaining lease									$ 9,100,000
Purchase right percentage of projected assets at fair market value									31.00%
Finance obligations for sale leaseback agreements | PNC Energy Capital, LLC
Debt Instrument [Line Items]
Long-term line of credit									$ 18,800,000	56,600,000
State of Connecticut Loan
Debt Instrument [Line Items]
Long-term line of credit									$ 6,908,000	$ 7,774,000
Debt instrument, face amount							$ 10,000,000.0	$ 10,000,000.0
Interest rate (as a percent)								2.00%
Debt instrument term								15 years
Debt instrument, payment terms, period principal payments are deferred								4 years
Debt instrument, date of first required payment								Dec. 01, 2019
Amount of loan forgiveness						$ 2,000,000.0
Loans Forgiveness Terms									if the Company created 165 full-time positions and retained 538 full-time positions for two consecutive years (as amended from time to time, the “Employment Obligation”) as measured on October 28, 2017 (as amended from time to time, the “Target Date”). The Assistance Agreement was subsequently amended in April 2017 to extend the Target Date by two years to October 28, 2019.
Number of full time positions required to be created | position						91		165
Number of full time positions required to be retained | position					538	538		538
Consecutive term for average number of employees					24 months	24 months	2 years
Principal payable number of employee under employee obligation target					$ 14,225.00
Number of minimum full time positions required to be maintained | position					91
Number of minimum full time positions required to be maintained including additional employment positions | position					629
Additional credits to be earned					$ 2,000,000.0
Debt Instrument, Period After Employment Period For Submission Of Job Audit					90 days
State of Connecticut Loan | Maximum
Debt Instrument [Line Items]
Amount of loan forgiveness									$ 5,000,000.0