Deferred Income Taxes Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Proceeds from Production Tax Credits	$ 7,692	$ 0	$ 0
Investment Tax Credit	1,970	(129)	(130)
Deferred income taxes	(8,969)	6,584	(8,992)
Deferred tax expense excluding items below	54,950	61,537	39,349
Adjustments to other noncurrent liabilities, regulatory assets, and liabilities	(65,596)	(54,732)	(48,428)
Other Comprehensive Income (Loss), Tax	(293)	(91)	217
Deferred tax (benefit) expense	$ (1,277)	$ 6,585	$ (8,992)