Income Taxes (Tables) |
12 Months Ended |
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Dec. 31, 2021 | |
| Income Taxes [Abstract] | |
| Provision for Income Taxes | Year Ended December 31, 2021 2020 2019U.S. Federal: (in thousands)Current $ — $ (337) $ (337)Deferred (34,548) 11,814 3,916Foreign: Current 20,282 3,859 9,747Deferred (7,890) 12,345 10,564Total $ (22,156) $ 27,681 $ 23,890 |
| Summary of Differences between the Financial Statement and Tax Bases of Assets and Liabilities | As of December 31,(in thousands) 2021 2020Deferred tax assets: Basis difference in fixed assets $ 20,133 $ 27,995Foreign tax credit carryforward 20,084 34,144Alternative minimum tax credit carryover — —U.S. federal net operating losses 25,182 32,579Foreign net operating losses 8,693 24,602Asset retirement obligations 8,546 3,640Operating leases 1,750 1,472Basis difference in accrued liabilities 402 368Basis difference in receivables 454 331Other 1,683 1,121Total deferred tax assets 86,927 126,252Valuation allowance (46,949) (126,252)Net deferred tax assets $ 39,978 $ — |
| Pretax Income | Year Ended December 31,(in thousands) 2021 2020 2019U.S. $ (38,867) $ (2,908) $ (13,330)Foreign 98,645 (17,494) 34,372 $ 59,778 $ (20,402) $ 21,042 |
| Statutory Rate Reconciliation | Year Ended December 31,(in thousands) 2021 2020 2019Tax provision computed at U.S. statutory rate $ 12,553 $ (4,284) $ 4,386Foreign taxes not offset in U.S. by foreign tax credits 35,306 (9,801) 16,015Recognition of foreign deferred tax assets, net of U.S. impact — — —Unrealizable foreign deferred tax assets — — —Permanent differences (703) 97 180Foreign tax credit expirations 14,060 — 9,616Increase/(decrease) in valuation allowance (83,372) 41,635 (6,307)Other — 34 —Total income tax expense (benefit) $ (22,156) $ 27,681 $ 23,890 |
| Income Tax Years Subject to Examination by Major Tax Jurisdictions | Jurisdiction YearsU.S. 2012-2021Gabon 2017-2021 |
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- References No definition available.
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Tabular disclosure of income before income tax between domestic and foreign jurisdictions. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Tabular disclosure of income tax examinations that an enterprise is currently subject to or that have been completed in the current period typically including a description of the examination, the jurisdiction conducting the examination, the tax year(s) under examination, the likelihood of an unfavorable settlement, the range of possible losses, the liability recorded, the increase or decrease in the liability from the prior period, and any penalties and interest that have been recorded. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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