Litigation (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Loss Contingencies [Line Items]
Potential liabilities related to litigation and environmental matters	$ 20,900	$ 31,900	$ 28,100
Insurance Receivable	338	10,000	5,900
Regulatory Assets	$ 20,500	$ 20,900	$ 20,900