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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax | Reconciliation between the statutory federal income tax rate and our effective income tax rate is as follows:
| Year Ended December 31, |  |
| 2023 |  |  | 2022 |  |  | 2021 |  |
Federal statutory tax rate |  | 21.0 |  | % |  | 21.0 |  | % |  | 21.0 |  | %
State, net of federal benefit |  | (0.1 | ) |  |  | 1.0 |  |  |  | 0.6 |  |
Equity compensation and executive compensation disallowance |  | (0.3 | ) |  |  | 0.2 |  |  |  | 2.6 |  |
Valuation allowances |  | 0.2 |  |  |  | (5.5 | ) |  |  | (26.8 | ) |
Permanent differences and other |  | — |  |  |  | (0.4 | ) |  |  | 0.2 |  |
Consolidated effective tax rate |  | 20.8 |  | % |  | 16.3 |  | % |  | (2.4 | ) | %
Income Tax Expense (Benefit) Attributable to Income Before Income Taxes | Income tax expense (benefit) attributable to income before income taxes consists of the following (in thousands):
| Year Ended December 31, |
| 2023 |  |  | 2022 |  |  | 2021 |
Current |  |  |  |  |  |  |  |
Federal | $ | — |  |  | $ | — |  |  | $ | — |
State |  | 1,547 |  |  |  | 14,688 |  |  |  | 7,984 |
| $ | 1,547 |  |  | $ | 14,688 |  |  | $ | 7,984 |
Deferred |  |  |  |  |  |  |  |
Federal | $ | 230,563 |  |  | $ | 245,839 |  |  | $ | 6,297 |
State |  | (2,909 | ) |  |  | (30,067 | ) |  |  | (24,024 | )
|  | 227,654 |  |  |  | 215,772 |  |  |  | (17,727 | )
Income tax expense (benefit) | $ | 229,201 |  |  | $ | 230,460 |  |  | $ | (9,743 | )
Significant Components of Deferred Tax Assets and Liabilities | Significant components of deferred tax assets and liabilities are as follows (in thousands):
| December 31, |
| 2023 |  |  | 2022 |
Deferred tax assets: |  |  |  |  |
Net operating loss carryforward | $ | 538,340 |  |  | $ | 581,349 |
Divestiture contract obligation |  | 107,067 |  |  |  | 105,227 |
Deferred compensation |  | 17,342 |  |  |  | 25,733 |
Equity compensation |  | 6,767 |  |  |  | 4,813 |
Asset retirement obligations |  | 25,614 |  |  |  | 24,113 |
Interest expense carryforward |  | 19,861 |  |  |  | 16,118 |
Lease right-of-use liabilities |  | 6,023 |  |  |  | 19,395 |
Unrealized mark-to-market loss |  | — |  |  |  | 30,307 |
Other |  | 16,396 |  |  |  | 16,922 |
Valuation allowances: |  |  |  |  |
Federal |  | (23,396 | ) |  |  | (21,320 | )
State, net of federal benefit |  | (172,001 | ) |  |  | (171,423 | )
Total deferred tax assets |  | 542,013 |  |  |  | 631,234 |
Deferred tax liabilities: |  |  |  |  |
Depreciation and depletion |  | (998,886 | ) |  |  | (935,710 | )
Unrealized mark-to-market gain |  | (96,545 | ) |  |  | — |
Lease right-of-use assets |  | (5,184 | ) |  |  | (18,440 | )
Other |  | (2,686 | ) |  |  | (10,655 | )
Total deferred tax liabilities |  | (1,103,301 | ) |  |  | (964,805 | )
Net deferred tax liability | $ | (561,288 | ) |  | $ | (333,571 | )

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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