Derivative and Hedging Instruments (Details-4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Current and Long-Term Regulatory Asset [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
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	$ 5,094	$ (617)
Unrealized loss (gain)	(21,834)	9,527
Realized (loss) gain reclassified to a deferred account	(12,905)	1,472
Realized (loss) gain reclassified to income statement	(8,797)	13,766
Ending balance	$ 5,226	$ 5,094
Other Current Assets [Member]
Derivative, Gain (Loss) on Derivative, Net [Abstract]
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	$ 2,747	$ 770
Unrealized loss (gain)	0	0
Realized (loss) gain reclassified to a deferred account	12,905	(1,472)
Realized (loss) gain reclassified to income statement	(14,083)	3,449
Ending balance	$ 1,569	$ 2,747