Derivative and Hedging Instruments (Details-4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Current And Long Term Reg Asset Liability [Member]
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]
Beginning balance	$ 5,226	$ 5,094
Unrealized loss (gain)	5,041	21,834
Realized (loss) gain reclassified to a deferred account	(3,821)	(12,905)
Realized (loss) gain reclassified to income statement	(6,506)	(8,797)
Ending balance	$ (60)	$ 5,226
Derivatives Other Current Assets [Member]
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]
Beginning balance	$ 1,569	$ 2,747
Unrealized loss (gain)	0	0
Realized (loss) gain reclassified to a deferred account	3,821	12,905
Realized (loss) gain reclassified to income statement	(5,002)	(14,083)
Ending balance	$ 388	$ 1,569