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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2019
Revenue [Abstract] |
Revenues From Contracts With Customers |
|  | Years Ended December 31,
|  | 2019 |  | 2018 |  | 2017
Revenue from customer contracts: |  | (in thousands)
Sales under the COSPA |  | $ | 86,554 |  | $ | 104,891 |  | $ | 74,693
Gabonese government share of Profit Oil |  |  | — |  |  | 2,193 |  |  | 11,638
U.S. crude oil and natural gas revenue |  |  | — |  |  | 5 |  |  | 47
Other items reported in revenue not associated with customer contracts: |  |  |  |  |  |  |  |  |
Gabonese government share of Profit Oil taken in-kind |  |  | 7,268 |  |  | 9,385 |  |  | —
Carried interest recoupment |  |  | 2,950 |  |  | 3,545 |  |  | 2,205
Royalties |  |  | (12,251) |  |  | (15,076) |  |  | (11,558)
Total revenue, net |  | $ | 84,521 |  | $ | 104,943 |  | $ | 77,025

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