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Note 7 - Revenue - Revenues from Contracts with Customers and Other Items Not Associated with Customer Contracts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Crude oil and natural gas sales | $ 455,066 | $ 354,326 | $ 199,075
Crude oil, natural gas and natural gas liquids sales | 455,066 | 354,326 | 199,075
EGYPT |  |  |
Royalties | (110,569) | (18,742) |
Crude oil and natural gas sales | 161,049 | 37,710 |
Gross sales | 272,613 | 56,452 |
Royalties | (110,569) | (18,742) |
Selling costs | (995) | 0 |
Crude oil, natural gas and natural gas liquids sales | 161,049 | 37,710 |
Revenue | 272,613 | 56,452 |
CANADA |  |  |
Other items reported in revenue not associated with customer contracts | 0 | 41 |
Royalties | (5,821) | (1,137) |
Crude oil and natural gas sales | 33,671 | 9,841 |
Royalties | (5,821) | (1,137) |
Selling costs | (702) | 0 |
Crude oil, natural gas and natural gas liquids sales | 33,671 | 9,841 |
Other revenue | 0 | 41 |
Crude Oil Sales and Purchase Agreements [Member] |  |  |
Sales under the COSPA or COSMA | 261,801 | 320,522 | 200,321
Revenue | 261,801 | 320,522 | 200,321
Crude Oil [Member] | CANADA |  |  |
Gross sales | 28,287 | 7,362 |
Revenue | 28,287 | 7,362 |
Gabonese Government Share of Profit Oil [Member] |  |  |
Other items reported in revenue not associated with customer contracts | 32,776 | 26,257 | 20,103
Other revenue | 32,776 | 26,257 | 20,103
Gas [Member] | CANADA |  |  |
Gross sales | 3,467 | 1,340 |
Revenue | 3,467 | 1,340 |
Carried Interest Recoupment [Member] |  |  |
Other items reported in revenue not associated with customer contracts | 5,301 | 5,843 | 7,517
Other revenue | 5,301 | 5,843 | 7,517
Natural Gas Liquids [Member] | CANADA |  |  |
Sales under the COSPA or COSMA | 8,440 | 2,235 |
Revenue | 8,440 | 2,235 |
Oil and Gas [Member] |  |  |
Royalties | (39,532) | (45,847) | (28,866)
Crude oil and natural gas sales | 260,346 | 306,775 | 199,075
Royalties | (39,532) | (45,847) | (28,866)
Crude oil, natural gas and natural gas liquids sales | $ 260,346 | $ 306,775 | $ 199,075

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