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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense increase (decrease)	$ 3,400		$ 6,000
Income tax expense (benefit)	1,442	$ 4,808	(3,408)	$ 2,645
Pre-tax loss increase (decrease)	17,400		$ 25,400
Effective tax rate estimate			18.50%
Ratepayer net refund	121,000		$ 121,000
Unrecognized tax benefits	12,400	10,600	12,400	10,600
Tax benefits that, if recognized, would affect the effective tax rate	$ 3,000	$ 3,100	$ 3,000	$ 3,100

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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