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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Expense (Benefit)	$ (658)	$ 586	$ 13,830	$ 1,080
Effective Tax Rate	(1.90%)	2.00%	8.10%	0.80%
Effective Income Tax Rate Reconciliation, State Rate Changes	$ 3,800		$ 3,800
Effective Income Tax Rate Reconciliation, Tax Credit, from Federal Production Tax Credits associated with increased wind production	$ 1,500		2,400
Colorado Electric and Nebraska Gas
Effective Income Tax Rate Reconciliation Prior Year Credit - Tax Cuts And Jobs Act Of 2017 Amount, Tax Benefit from Bill Credit			$ 10,000

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