Schedule I - Parent Company Financial Statement (Statements Of Condensed Unconsolidated Operations) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Operating costs and expenses: | |||||||||||
| Depreciation, depletion and amortization | $ 6,457 | $ 6,926 | $ 32,998 | ||||||||
| General and administrative expense | 10,377 | 9,561 | 12,294 | ||||||||
| Shareholder matters | (332) | 2,372 | |||||||||
| Total operating costs and expenses | $ 14,413 | $ 14,454 | $ 15,068 | $ 13,055 | $ 14,249 | $ 10,919 | $ 14,232 | $ 24,509 | 56,990 | 63,909 | 182,459 |
| Operating income (loss) | 2,495 | 3,721 | 5,587 | 8,148 | 819 | 3,690 | 4,615 | (13,515) | 19,951 | (4,391) | (103,106) |
| Other income (expense): | |||||||||||
| Other, net | 2,113 | (2,015) | (1,536) | ||||||||
| Total other income (expense) | 699 | (4,628) | (2,861) | ||||||||
| Income (loss) from continuing operations before income taxes | 20,650 | (9,019) | (105,967) | ||||||||
| Income taxes (benefit) expense | 10,378 | 9,248 | 14,587 | ||||||||
| Net income (loss) | $ 3,431 | $ (322) | $ 2,283 | $ 4,259 | $ (3,641) | $ (14,767) | $ (518) | $ (7,624) | 9,651 | (26,550) | (158,656) |
| VAALCO ENERGY, INC. [Member] | |||||||||||
| Operating costs and expenses: | |||||||||||
| Depreciation, depletion and amortization | 260 | 244 | 240 | ||||||||
| General and administrative expense | 8,489 | 7,935 | 7,550 | ||||||||
| Shareholder matters | (332) | 2,372 | |||||||||
| Total operating costs and expenses | 8,749 | 7,847 | 10,162 | ||||||||
| Other operating income, net | (12) | 16 | |||||||||
| Operating income (loss) | (8,761) | (7,831) | (10,162) | ||||||||
| Other income (expense): | |||||||||||
| Interest exense, net | (2) | (181) | |||||||||
| Other, net | (1,044) | (1,985) | (469) | ||||||||
| Equity in subsidiary earnings (losses) | 18,196 | (16,732) | (146,495) | ||||||||
| Total other income (expense) | 17,152 | (18,719) | (147,145) | ||||||||
| Income (loss) from continuing operations before income taxes | 8,391 | (26,550) | (157,307) | ||||||||
| Income taxes (benefit) expense | (1,260) | 1,349 | |||||||||
| Net income (loss) | $ 9,651 | $ (26,550) | $ (158,656) | ||||||||
| X | ||||||||||
- Definition Other Income Expense No definition available.
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| X | ||||||||||
- Definition Shareholder Matters No definition available.
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| X | ||||||||||
- Definition Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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/presentationRef
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| X | ||||||||||
- Definition The net amount of nonoperating interest income (expense). No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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| X | ||||||||||
- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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