Derivative and Hedging Instruments (Details-4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
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	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,	$ (697)	$ 1,946	$ (60)	$ 5,226
Unrealized loss	1,484	1,768	1,846	4,666
Realized (loss) gain reclassified to a deferred account	(381)	(639)	(118)	(3,333)
Realized (loss) gain reclassified to income statement	(383)	(1,573)	(1,645)	(5,057)
Ending balance,	$ 23	$ 1,502	$ 23	$ 1,502
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	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,	$ 396	$ 527	$ 388	$ 1,569
Unrealized loss	0	0	0	0
Realized (loss) gain reclassified to a deferred account	381	639	118	3,333
Realized (loss) gain reclassified to income statement	(167)	(707)	104	(4,443)
Ending balance,	$ 610	$ 459	$ 610	$ 459