Intangible Assets, Intangible Liabilities, and Goodwill - Intangible Assets Subject to Amortization (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Intangible Liabilities
Finite-Lived Intangible Assets [Line Items]
Intangible liabilities, gross	$ 38,300	$ 38,300
LTSA
Finite-Lived Intangible Assets [Line Items]
Intangible liabilities, gross	24,100	24,100
Power supply agreements
Finite-Lived Intangible Assets [Line Items]
Intangible liabilities, gross	14,200	14,200
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Storm Recovery Property intangible asset	184,004	184,004
Net intangible assets carrying amount	145,704	145,704
Accumulated amortization	(105,848)	(82,466)
Net intangible assets subject to amortization	39,856	63,238
Power supply agreements
Finite-Lived Intangible Assets [Line Items]
Storm Recovery Property intangible asset	$ 184,004	$ 184,004