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Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

The components of income before taxes for domestic and foreign operations consisted of the following:

									Year ended December 31,
(in thousands)															2020						2019						2018
Domestic															$	(361,242)					$	299,330					$	195,843
Foreign															175						1,917						3,475
Total															$	(361,067)					$	301,247					$	199,318

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes is composed of the following:

			Year ended December 31,
(in thousands)			2020						2019						2018
Current:
Federal			$	(195,572)					$	(34)					$	(3,707)
State			(211)						505						(650)
Foreign			132						530						1,086
Total current			(195,651)						1,001						(3,271)
Deferred:
Federal			24,126						63,430						41,593
State			(5,449)						4,699						3,744
Foreign			—						—						(4,550)
Total deferred			18,677						68,129						40,787
Total income tax provision			$	(176,974)					$	69,130					$	37,516

Schedule of Effective Income Tax Rate Reconciliation

The effective tax rate on income before income taxes differed from the federal statutory income tax rate as follows:

			Year ended December 31,
(in thousands)			2020						2019						2018
Income tax expense at federal statutory rate			$	(70,459)					$	63,262					$	41,857
State income taxes, net of federal income tax benefit			(5,495)						5,070						3,560
CARES Act			(97,988)						—						—
Foreign income tax expense			132						530						(3,464)
Other			(3,164)						268						(4,437)
Total income tax expense			$	(176,974)					$	69,130					$	37,516

Schedule of Deferred Tax Assets and Liabilities

The major components of the Company’s net deferred tax assets and liabilities are as follows:

			As of December 31,
(in thousands)			2020						2019
Deferred tax assets:
Accrued vacation			$	1,024					$	907
Accrued bonus			—						5,523
State taxes			—						88
Accrued property taxes			1,111						1,742
Stock-based compensation expense			1,025						1,415
Net operating loss			15,979						58,066
Tax credit			10,995						—
Less: valuation allowance			1,214						1,193
Total deferred tax assets			28,920						66,548
Deferred tax liabilities:
Prepaid expenses			2,517						6,211
Depreciation			308,266						278,554
Other			20,242						14,522
Total deferred tax liabilities			331,025						299,287
Net deferred tax liabilities			$	302,105					$	232,739

Summary of Income Tax Contingencies

The reconciliation of the Company's tax contingencies is as follows:

						As of December 31,
(in thousands)						2020						2019						2018
Beginning Balance						$	3,970					$	4,175					$	778
Increases for tax position of prior years						—						—						3,364
Increases for tax position of current year						—						146						293
Decreases for tax positions of prior years						(3,602)						(135)						(10)
Settlements						(26)						(216)						(110)
Decreases for lapses in statute of limitations						—						—						(140)
Ending Balance						$	342					$	3,970					$	4,175

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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