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Fair Value - Schedule of Activity For Energy Commodity and Equity Investments Derivative Assets (Liabilities) Measured At Fair Value Using Significant Unobservable Inputs (Level 3) (Details) - Level 3 [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Beginning Balance $ 36,550 $ (7,771) $ (8,410)
Transfers in   20,902  
Included in regulatory assets 9,238 (4,740) 4,292
Recognized in net income $ (4,323) $ 33,382  
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)  
Purchases and debt conversions $ 3,293    
Settlements 246 $ (5,223) (3,653)
Other (3,000)    
Ending Balance 42,004 36,550 (7,771)
Equity Investment [Member]      
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Beginning Balance 54,284    
Transfer in   20,902  
Recognized in net income $ (4,323) $ 33,382  
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)  
Purchases and debt conversions $ 3,293    
Other (3,000)    
Ending Balance 50,254 $ 54,284  
Natural Gas Exchange Agreements [Member]      
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Beginning Balance (17,734) (7,771) (8,410)
Included in regulatory assets 9,238 (4,740) 4,292
Settlements 246 (5,223) (3,653)
Ending Balance $ (8,250) $ (17,734) $ (7,771)