Segment Information - Segment Activity (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | |||
---|---|---|---|---|---|
Jun. 30, 2013
|
Jun. 30, 2012
|
Jun. 30, 2013
|
Jun. 30, 2012
|
Dec. 31, 2012
|
|
Segment Reporting Information [Line Items] | |||||
Revenues, Net | $ 29,118 | $ 58,818 | $ 73,255 | $ 104,104 | |
Income from operations | 11,666 | 38,632 | 33,170 | 68,739 | |
Total assets | 272,223 | 272,223 | 267,956 | ||
Operating Segments [Member] | Corporate and Other [Member]
|
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Segment Reporting Information [Line Items] | |||||
Revenues, Net | |||||
Income from operations | (1,307) | (2,198) | (3,482) | (5,061) | |
Total assets | 26,846 | 26,846 | 38,585 | ||
Operating Segments [Member] | Gabon [Member]
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Segment Reporting Information [Line Items] | |||||
Revenues, Net | 28,574 | 57,886 | 72,229 | 102,613 | |
Income from operations | 14,853 | 45,258 | 45,717 | 79,605 | |
Total assets | 208,545 | 208,545 | 190,652 | ||
Operating Segments [Member] | Angola [Member]
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Segment Reporting Information [Line Items] | |||||
Revenues, Net | |||||
Income from operations | (379) | (585) | (1,582) | (1,199) | |
Total assets | 12,126 | 12,126 | 11,405 | ||
Operating Segments [Member] | Equatorial Guinea [Member]
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Segment Reporting Information [Line Items] | |||||
Revenues, Net | |||||
Income from operations | (165) | (455) | |||
Total assets | 10,010 | 10,010 | 10,000 | ||
Operating Segments [Member] | USA [Member]
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Segment Reporting Information [Line Items] | |||||
Revenues, Net | 544 | 932 | 1,026 | 1,491 | |
Income from operations | (1,336) | (3,843) | (7,028) | (4,606) | |
Total assets | $ 14,696 | $ 14,696 | $ 17,314 |