Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Changes in Standardized Measure (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Standardized measure, beginning of year | $ 23,826 | $ 60,282 |
| Sales of oil and natural gas, net of production costs | (1,581) | (7,978) |
| Net changes in prices and production costs | (4,829) | (1,303) |
| Changes in estimated future development costs | 3,017 | 1,788 |
| Sale of minerals in place | (3,577) | (23,116) |
| Revisions in previous quantity estimates | (1,089) | (14,188) |
| Previously estimated development costs incurred | 231 | 374 |
| Net changes in income taxes | 0 | 2,611 |
| Accretion of discount | 2,499 | 6,073 |
| Changes in timing and other | (1,770) | (717) |
| Standardized measure, end of year | $ 16,727 | $ 23,826 |
| X | ||||||||||
- Definition Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase in standardized measure of discounted future net cash flow as a result of previously estimated development costs incurred. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after discount, future accumulated cash outflow for development and production costs, and future income tax expense, of estimated future accumulated cash inflow for proved oil and gas reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|