Note 3 - Income Taxes - Components of Income (Loss) Domestic and Foreign (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
United States	$ (2,268)	$ (1,740)
Foreign	(41)	(126)
Loss before income taxes	$ (2,309)	$ (1,866)

Amount, before income tax expense (benefit), of result of operation in oil- and gas-producing activities. Excludes corporate overhead and interest costs.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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