Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Taxes
Income tax provision at statutory rate	$ 115,826	$ 226,587	$ 71,284
Percentage depletion and other permanent items	(30,585)	(52,647)	(29,392)
State taxes, net of effect of federal taxes	2,725	2,988	16,490
Change in valuation allowance	(879)	(420,688)	(69,603)
Other, net	427	(8,166)	13,095
Provision for (benefit from) income taxes	$ 87,514	$ (251,926)	$ 1,874

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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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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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