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Derivative Instruments - Narrative (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2023
USD ($)
MWh
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
BVES            
Derivative Instruments, Gain (Loss) [Line Items]            
Description of derivative activity volume | MWh 715,221          
Commodity Contract            
Derivative Instruments, Gain (Loss) [Line Items]            
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs $ (1,500)          
Commodity Contract | BVES            
Derivative Instruments, Gain (Loss) [Line Items]            
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs $ 1,525 $ 4,657 $ 11,847 $ 7,569 $ 8,114 $ 4,441
Minimum | Commodity Contract | BVES            
Derivative Instruments, Gain (Loss) [Line Items]            
Term of derivative contract 3 years          
Maximum | Commodity Contract | BVES            
Derivative Instruments, Gain (Loss) [Line Items]            
Term of derivative contract 5 years