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Note 5 - Oil and Natural Gas Production Activities (Details Textual) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) $ / bbl $ / MMBTU | Dec. 31, 2022 USD ($)
Impairment of Oil and Gas Properties | $ 26,680 | $ 0
Oil and Gas Property, Ceiling Test, Discount Rate | 10.00% |
Crude Oil [Member] |  |
Oil and Gas, Average Sale Price (in USD per Barrel of Oil) | $ / bbl | 78.22 |
Natural Gas and Natural Gas Liquids [Member] |  |
Oil and Gas, Average Sale Price (in USD per Barrel of Oil) | $ / MMBTU | 2.64 |
Unproven Properties Transferred to Evaluated Properties [Member] |  |
Impairment of Oil and Gas Properties | $ 1,600 |

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- Definition Sales price per unit of oil and gas produced. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1204 -Paragraph (b) -Subparagraph (1) -Publisher SEC + Details
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- Definition The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 35 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482450/932-360-35-11 + Details
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- Definition Represents the discount rate used in a ceiling test for oil and gas property. + References No definition available. + Details
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