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ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 30, 2024 | Mar. 31, 2025 | Feb. 28, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Business Combination [Line Items] |  |  |  |  |  |  |  |
Payments to acquire productive assets |  | $ 3,000 |  |  |  |  |  |
Net cost to acquire business |  |  |  |  |  | $ 0 | $ (412) |
Bargain purchase gain |  |  |  | $ 0 | $ 0 | $ 0 | $ 19,898 |
FPSO |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |
Consideration transferred |  |  | $ 20,000 |  |  |  |  |
Net cost to acquire business |  |  | $ 5,500 |  |  |  |  |
Svenska Petroleum Exploration Aktiebolag |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |
Payments to acquire businesses | $ 40,200 |  |  |  |  |  |  |
Cash acquired from acquisition | 31,800 |  |  |  |  |  |  |
Restricted cash | 8,800 |  |  |  |  |  |  |
Cash received | 400 |  |  |  |  |  |  |
Bargain purchase gain | $ 19,900 |  |  |  |  |  |  | $ 6,400
CI-705 Block |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |
Percentage of working interest |  | 70.00% |  |  |  |  |  |
Percentage of paying interest |  | 100.00% |  |  |  |  |  |

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