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Note 5 - Other Long-Term Obligations and Commitments (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] |
(Thousands of dollars) |  | Operating Leases |
2025 |  |  | 149 |
Total undiscounted lease payments |  | $ | 149 |
Less: Amount associated with discounting |  |  | (17 | )
Total net operating lease liabilities |  | $ | 132 |
Less: Current portion included in Current portion of Asset Retirement and Other Long-Term Obligations |  |  | 132 |
Non-current portion included in Other Long-Term Obligations |  | $ | 0 |
Schedule of Change in Asset Retirement Obligation [Table Text Block] |
|  | Years Ended December 31, |
(Thousands of dollars) |  | 2024 |  |  | 2023 |
Asset retirement obligation at beginning of period |  | $ | 15,153 |  |  | $ | 15,443 |
Net wells placed on production |  |  | 210 |  |  |  | 254 |
Liabilities settled |  |  | (947 | ) |  |  | (2,706 | )
Dispositions |  |  | (350 | ) |  |  | (1,161 | )
Accretion expense |  |  | 733 |  |  |  | 684 |
Revisions in estimated liabilities |  |  | (932 | ) |  |  | 2,639 |
Asset retirement obligation at end of period |  | $ | 13,867 |  |  | $ | 15,153 |
Less: Current portion included in Current portion of asset retirement and other long-term obligations |  |  | 68 |  |  |  | 446 |
Long-term Asset Retirement Obligations included in Asset Retirement Obligations |  | $ | 13,799 |  |  | $ | 14,707 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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