Litigation (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Loss Contingencies [Line Items]
Potential liabilities related to litigation and environmental matters	$ 21,000	$ 31,900	$ 33,500
Insurance Receivable	98	10,000	11,900
Regulatory Assets	$ 20,100	$ 20,900	$ 20,500