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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, 2024 MMBTU MWh | Dec. 31, 2023 MWh MMBTU
Purchase [Member] | Physical [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 6 | 9
Year two | MWh | 0 | 0
Year three | MWh | 0 | 0
Year four | MWh | 0 |
Purchase [Member] | Physical [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 12,866 | 22,747
Year two | MMBTU | 24,248 | 12,505
Year three | MMBTU | 14,663 | 5,570
Year four | MMBTU | 3,910 |
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 |
Purchase [Member] | Financial [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 19,734 | 74,596
Year two | MMBTU | 29,315 | 19,590
Year three | MMBTU | 10,765 | 3,940
Year four | MMBTU | 1,350 |
Sales [Member] | Physical [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 194 | 472
Year two | MWh | 348 | 11
Year three | MWh | 0 | 0
Year four | MWh | 0 |
Sales [Member] | Physical [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 581 | 1,723
Year two | MMBTU | 1,115 | 1,115
Year three | MMBTU | 0 | 0
Year four | MMBTU | 0 |
Sales [Member] | Financial [Member] | Electric Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MWh | 408 | 510
Year two | MWh | 175 | 96
Year three | MWh | 0 | 0
Year four | MWh | 0 |
Sales [Member] | Financial [Member] | Gas Derivative [Member] |  |
Energy Commodity Derivative Volumes [Line Items] |  |
Year one | MMBTU | 2,690 | 12,038
Year two | MMBTU | 1,125 | 1,125
Year three | MMBTU | 0 | 0
Year four | MMBTU | 0 |

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