Derivatives and Risk Management - Schedule of Energy Commodity Derivative Volumes (Details) MWh in Thousands, MMBTU in Thousands	9 Months Ended	12 Months Ended
	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