Derivative and Hedging Instruments (Details-4) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Current And Long Term Reg Asset Liability [Member]
Change In Derivative Fair Value [Roll Forward]
Unrealized loss	$ 1,680	$ 2,118	$ (3,753)	$ 362
Realized (loss) gain reclassified to a deferred account	(245)	(288)	2,363	263
Realized (loss) gain reclassified to income statement	(567)	(667)	768	(1,262)
Derivatives Other Current Assets [Member]
Change In Derivative Fair Value [Roll Forward]
Unrealized loss	0	0	0	0
Realized (loss) gain reclassified to a deferred account	245	288	(2,363)	(263)
Realized (loss) gain reclassified to income statement	$ (54)	$ 30	$ 2,261	$ 271

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.