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Derivatives and Risk Management - Schedule of Energy Commodity Derivative Volumes (Details) MWh in Thousands, MMBTU in Thousands | 9 Months Ended | 12 Months Ended
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Sep. 30, 2022 MMBTU MWh | Dec. 31, 2021 MWh MMBTU
Purchase [Member] | Physical [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 39 | 129
Year two | MWh | 0 | 0
Year three | MWh | 0 | 0
Year four | MWh | 0 | 0
Purchase [Member] | Physical [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 10,692 | 7,114
Year two | MMBTU | 13,325 | 378
Year three | MMBTU | 533 | 228
Year four | MMBTU | 450 | 0
Purchase [Member] | Financial [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 0 | 0
Year two | MWh | 0 | 0
Year three | MWh | 0 | 0
Year four | MWh | 0 | 0
Purchase [Member] | Financial [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 28,583 | 61,405
Year two | MMBTU | 65,635 | 23,218
Year three | MMBTU | 29,135 | 3,413
Year four | MMBTU | 2,250 | 0
Sales [Member] | Physical [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 76 | 234
Year two | MWh | 62 | 0
Year three | MWh | 0 | 0
Year four | MWh | 0 | 0
Sales [Member] | Physical [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 1,762 | 3,933
Year two | MMBTU | 1,810 | 1,360
Year three | MMBTU | 1,370 | 1,370
Year four | MMBTU | 1,115 | 1,115
Sales [Member] | Financial [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 62 | 452
Year two | MWh | 584 | 0
Year three | MWh | 0 | 0
Year four | MWh | 0 | 0
Sales [Member] | Financial [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 11,703 | 31,485
Year two | MMBTU | 28,330 | 9,323
Year three | MMBTU | 8,755 | 228
Year four | MMBTU | 450 | 0

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