Tax Equity Financing (Details) $ in Thousands								1 Months Ended		3 Months Ended		6 Months Ended
	Dec. 16, 2022 USD ($) MW	Oct. 04, 2022 MW	Jul. 07, 2022 USD ($)	May 15, 2022 USD ($)	Dec. 13, 2021 USD ($)	Oct. 18, 2021	Aug. 04, 2021 USD ($)	Nov. 30, 2021 USD ($) MW	Aug. 31, 2021 USD ($) MW	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Tax Equity Financing
Net income (loss) attributable to noncontrolling interests										$ 392	$ 91	$ (2,072)	$ (5,405)
Groton Project [Member]
Tax Equity Financing
Net income (loss) attributable to noncontrolling interests										40	0	2,900	0
East West Bank Partnership Flip Transaction
Tax Equity Financing
Capacity of plant | MW									7.4
Tax equity financing commitment			$ 12,000						$ 15,000
Tax equity financing, Aggregate fee			500
Tax equity financing, Withdrawal right, Percent of return of investment						101.00%
Initial draw							$ 3,000
Closing costs							800
Remaining amount of draw							$ 12,000
Fee for extension of commercial operation deadline				$ 400
Percentage of cash and tax allocations to be received								95.00%
East West Bank Partnership Flip Transaction | Groton Project [Member]
Tax Equity Financing
Tax equity financing, Aggregate fee	$ 500
REI Partnership Flip Transaction
Tax Equity Financing
Capacity of plant | MW								7.4
Tax equity financing commitment								$ 12,400			11,900		11,900
Amount of Refund											500
Amount of distribution												200	100
Initial draw					$ 3,200
Closing costs					$ 400
Remaining amount of draw														$ 9,200	$ 9,200
Legal and advisory fees												400
Net income (loss) attributable to noncontrolling interests										$ 400	$ 100	$ 800	$ (5,400)
Percentage of cash and tax allocations to be received								95.00%
Percentage of amount payable								10.30%
Amended and Restated PPA | Groton Project [Member]
Tax Equity Financing
Capacity of plant | MW	6
Capacity of plant due to Technical Improvement Plan | MW	7.4
Payment of amendment fee	$ 1,200
First Anniversary of Project Achieving Commercial Operations [Member] | East West Bank Partnership Flip Transaction
Tax Equity Financing
Tax equity financing commitment, Contributions			4,000
Second Anniversary of Project Achieving Commercial Operations [Member] | East West Bank Partnership Flip Transaction
Tax Equity Financing
Tax equity financing commitment, Contributions			4,000
Third Anniversary of Project Achieving Commercial Operations [Member] | East West Bank Partnership Flip Transaction
Tax Equity Financing
Tax equity financing commitment, Contributions			$ 4,000
Maximum | East West Bank Partnership Flip Transaction | Groton Project [Member]
Tax Equity Financing
Capacity of plant | MW		7.4