Fair Value - Schedule of Activity For Energy Commodity Derivative Assets (Liabilities) Measured At Fair Value Using Significant Unobservable Inputs (Level 3) (Details) - Natural Gas Exchange Agreements [Member] - Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ (2,289)	$ (6,078)	$ (7,771)	$ (8,410)
Included in regulatory assets/liabilities	(4,551)	(4,971)	3,144	(1,482)
Settlements			(2,213)	(1,157)
Ending Balance	$ (6,840)	$ (11,049)	$ (6,840)	$ (11,049)