Derivative Instruments - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) MWh	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
BVESI
Derivative Instruments, Gain (Loss) [Line Items]
Description of derivative activity volume | MWh	254,022
Commodity Contract
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	$ 7,600
Commodity Contract | BVESI
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs	$ 7,569	$ 8,114	$ 4,441	$ 7,875	$ 2,810	$ (1,537)
Minimum | Commodity Contract | BVESI
Derivative Instruments, Gain (Loss) [Line Items]
Term of derivative contract	3 years
Maximum | Commodity Contract | BVESI
Derivative Instruments, Gain (Loss) [Line Items]
Term of derivative contract	5 years