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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue [Abstract] |
Revenues From Contracts With Customers |
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Revenue from customer contracts: | (in thousands)
Sales under the COSPA | $ | 67,041 |  | $ | 86,554 |  | $ | 104,891
Gabonese government share of Profit Oil |  | — |  |  | — |  |  | 2,193
U.S. crude oil and natural gas revenue |  | — |  |  | — |  |  | 5
Other items reported in revenue not associated with customer contracts: |  |  |  |  |  |  |  |
Gabonese government share of Profit Oil taken in-kind |  | 8,738 |  |  | 7,268 |  |  | 9,385
Carried interest recoupment |  | 1,631 |  |  | 2,950 |  |  | 3,545
Royalties |  | (10,234) |  |  | (12,251) |  |  | (15,076)
Total revenue, net | $ | 67,176 |  | $ | 84,521 |  | $ | 104,943

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