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Note 6 - Revenue - Revenues from Contracts with Customers and Other Items Not Associated with Customer Contracts (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Net revenues | $ 100,155 | $ 80,403 |  |
Crude oil, natural gas and natural gas liquids sales | 100,155 | 80,403 |  |
EGYPT |  |  |  |
Royalties | (26,120) | (19,340) |  |
Net revenues | 36,961 | 34,784 |  |
Gross sales | 63,192 | 54,621 |  |
Royalties | (26,120) | (19,340) |  |
Selling costs | (111) | (497) |  |
Crude oil, natural gas and natural gas liquids sales | 36,961 | 34,784 |  |
Revenue | 63,192 | 54,621 |  |
CANADA |  |  |  |
Royalties |  |  | $ (1,117) | $ (1,193)
Net revenues |  |  | 5,689 | 8,882
Royalties |  |  | (1,117) | (1,193)
Selling costs |  |  | (143) | 0
Crude oil, natural gas and natural gas liquids sales |  |  | 5,689 | 8,882
Crude Oil Sales and Purchase Agreements [Member] |  |  |  |
Sales under the COSPA or COSMA | 64,788 | 42,601 |  |
Revenue | 64,788 | 42,601 |  |
Carried Interest Recoupment [Member] |  |  |  |
Other items reported in revenue not associated with customer contracts | 1,174 | 0 |  |
Crude Oil [Member] | CANADA |  |  |  |
Gross sales |  |  | 4,153 | 6,654
Revenue |  |  | 4,153 | 6,654
Oil and Gas [Member] |  |  |  |
Royalties | (8,458) | (5,864) |  |
Net revenues | 57,504 | 36,737 |  |
Royalties | (8,458) | (5,864) |  |
Crude oil, natural gas and natural gas liquids sales | $ 57,504 | $ 36,737 |  |
Gas [Member] | CANADA |  |  |  |
Gross sales |  |  | 820 | 958
Revenue |  |  | 820 | 958
Natural Gas Liquids (NGL) [Member] | CANADA |  |  |  |
Sales under the COSPA or COSMA |  |  | 1,976 | 2,463
Revenue |  |  | $ 1,976 | $ 2,463

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