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Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Effective tax rate, percentage	20.60%	18.00%	17.60%	29.40%
AMT tax credit refund						$ 102,482,000
Total amount of uncertain tax positions	$ 31,891,000		$ 31,891,000		$ 31,891,000
Unrecognized tax benefits that would impact effective tax rate	31,891,000		31,891,000		31,891,000
Accrued interest liability	0		$ 0		$ 0
Net increase in deferred tax expense	11,455,000
Increase in deferred taxes relating to state apportionment rate changes	16,507,000
State Net Operating Loss
Valuation Allowance [Line Items]
Change in valuation allowance	$ 5,052,000

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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