Income Taxes (Narrative) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
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| Income Taxes [Line Items] | ||||
| Effective income tax rate | (53.00%) | 101.00% | ||
| Change in valuation allowance | $ (5,400,000) | $ 37,400,000 | ||
| Income tax expense (benefit) | $ (2,759,000) | $ 7,681,000 | 28,470,000 | $ 19,642,000 |
| Favorable oil price adjustment | 3,800,000 | |||
| Uncertain tax positions | $ 0 | |||
| Authorities Other Than United States And Gabon [Member] | ||||
| Income Taxes [Line Items] | ||||
| Effective income tax rate | 0.00% | |||
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- Definition Income Tax Benefit, Favorable Oil Price Adjustment No definition available.
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- Definition Income Taxes [Line Items] No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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