|
Segment Information - Segment Activity (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Sep. 30, 2014
|
Sep. 30, 2013
|
Dec. 31, 2013
|
|
| Segment Reporting Information [Line Items] | |||||
| Revenues | $ 24,486 | $ 37,740 | $ 104,659 | $ 110,995 | |
| Income (loss) from operations | 6,687 | 8,104 | 39,870 | 41,274 | |
| Total assets | 362,856 | 362,856 | 308,167 | ||
|
Operating Segments | Corporate and Other
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Income (loss) from operations | (1,966) | (611) | (5,580) | (4,091) | |
| Total assets | 25,714 | 25,714 | 20,211 | ||
|
Operating Segments | Gabon
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Revenues | 24,132 | 37,253 | 103,507 | 109,482 | |
| Income (loss) from operations | 10,326 | 14,156 | 49,239 | 59,871 | |
| Total assets | 302,356 | 302,356 | 256,033 | ||
|
Operating Segments | Angola
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Income (loss) from operations | (1,319) | (538) | (3,165) | (2,120) | |
| Total assets | 15,066 | 15,066 | 12,204 | ||
|
Operating Segments | Equatorial Guinea
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Income (loss) from operations | (254) | (149) | (591) | (604) | |
| Total assets | 10,223 | 10,223 | 10,059 | ||
|
Operating Segments | USA
|
|||||
| Segment Reporting Information [Line Items] | |||||
| Revenues | 354 | 487 | 1,152 | 1,513 | |
| Income (loss) from operations | (100) | (4,754) | (33) | (11,782) | |
| Total assets | $ 9,497 | $ 9,497 | $ 9,660 | ||