Fair Value Measurements - Schedule of Significant Unobservable Inputs Used to Value Level 3 Instruments (Details) $ in Thousands	Dec. 31, 2025 USD ($) $ / MMBTU $ / MWh	Dec. 31, 2024 USD ($) $ / MMBTU $ / MWh
Commodity Contracts
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative asset	$ 8,387	$ 16,558
Derivative liability	36,636	61,786
Commodity Contracts | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative asset	0	7,176
Derivative liability	23,710	22,215
Electricity Forward Contract | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative asset	0	708
Derivative liability	$ 21,913	$ 21,890
Electricity Forward Contract | Minimum | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MWh	41.51	25.25
Derivative asset, measurement input | $ / MWh		25.25
Electricity Forward Contract | Maximum | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MWh	149.37	151.11
Derivative asset, measurement input | $ / MWh		151.11
Electricity Forward Contract | Weighted Average | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MWh	80.20	106.06
Derivative asset, measurement input | $ / MWh		106.06
Natural Gas Forward Contract | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative asset	$ 0	$ 6,468
Derivative liability	$ 1,797	$ 325
Natural Gas Forward Contract | Minimum | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MMBTU	0.07	(0.89)
Derivative asset, measurement input | $ / MMBTU		(0.89)
Natural Gas Forward Contract | Maximum | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MMBTU	0.36	1.47
Derivative asset, measurement input | $ / MMBTU		1.47
Natural Gas Forward Contract | Weighted Average | Level 3
Information regarding the entity's internally developed significant unobservable inputs used to value its level 3 instruments
Derivative liability, measurement input | $ / MMBTU	0.04	0.71
Derivative asset, measurement input | $ / MMBTU		0.71