v3.26.1
Derivative and Hedging Instruments (Details-4) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Current and Long-Term Regulatory Asset (Liability)    
Derivative Unrealized Realized Gains Losses On Balance Sheet [Line Items]    
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Utilities Operating Expense, Purchased Power, Utilities Operating Expense, Cost of Gas Sold Utilities Operating Expense, Purchased Power, Utilities Operating Expense, Cost of Gas Sold
Change In Derivative Fair Value [Roll Forward]    
Unrealized loss $ (5,432) $ (1,756)
Realized (loss) gain reclassified to a deferred account 2,608 551
Realized (loss) gain reclassified to income statement $ 1,335 $ (595)
Other Current Assets    
Derivative Unrealized Realized Gains Losses On Balance Sheet [Line Items]    
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Utilities Operating Expense, Purchased Power, Utilities Operating Expense, Cost of Gas Sold Utilities Operating Expense, Purchased Power, Utilities Operating Expense, Cost of Gas Sold
Change In Derivative Fair Value [Roll Forward]    
Unrealized loss $ 0 $ 0
Realized (loss) gain reclassified to a deferred account (2,608) (551)
Realized (loss) gain reclassified to income statement $ 2,315 $ 241