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Note 9 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jan. 27, 2025 | Jan. 23, 2025 | Jan. 22, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jan. 29, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  | 0 |  |  | 0 |  |  | 0 | 0 |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  | $ 11,877 | $ 0 |
Stock Repurchased During Period, Shares (in shares) |  |  |  | 0 |  |  | 19,000 |  |  | 197,000 | 483,000 |
Stock Repurchased During Period, Value |  |  |  | $ 0 | $ 83 | $ 234 | $ 20 | $ 168 | $ 337 | $ 316 | $ 526 |
Share Repurchase Program, Weighted Average Price Per Share (in dollars per share) |  |  |  | $ 0 |  |  | $ 1.05 |  |  | $ 1.61 | $ 1.09 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  |  |  |  |  |  |  |  | 10 years |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  |  |  |  |  | $ 1,500 | $ 900 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  | 0 |  |  | 0 |  |  | 0 | 0 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  | $ 1,200 |  |  |  |  |  | $ 1,200 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  |  |  |  |  | 1 year 8 months 12 days |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  |  |  |  |  | $ 5,000
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  | $ 0 |  |  | $ 0 |  |  | $ 0 | $ 0 |
Banner Oil & Gas, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Shares (in shares) | 534,020 |  |  |  |  |  |  |  |  |  |  |
Woodford Petroleum, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Shares (in shares) | 41,229 |  |  |  |  |  |  |  |  |  |  |
Sage Road Energy II, LP [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Shares (in shares) | 60,151 |  |  |  |  |  |  |  |  |  |  |
Related Party [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Value | $ 1,574 |  |  |  |  |  |  |  |  |  |  |
Share Repurchase Program, Weighted Average Price Per Share (in dollars per share) | $ 2.48 |  |  |  |  |  |  |  |  |  |  |
Sage Road Capital, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments |  | $ 1,574 |  |  |  |  |  |  |  |  |  |
Underwriting Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 4,871,400 | 4,871,400 |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) |  |  | $ 2.65 |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 11,900 |  |  |  |  |  |  |  |  |  |
Equity Offering, Commission, Percentage of Closing Sales Price | 8.20% |  |  |  |  |  |  |  |  |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  | 635,400 |  |  |  |  |  |  |  |  |  |

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
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