Note 7 - Supplemental Information Relating to Oil and Gas Producing Activities (Unaudited) (Details Textual) a in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) a $ / bbl $ / Mcf	Dec. 31, 2023 USD ($) a $ / bbl $ / Mcf
Oil and Gas, Cost Incurred, Proved Reserve, Property Acquisition Cost | $	$ 0	$ 0
Oil and Gas, Undeveloped Acreage, Net (Acre) | a	0	0
Discount Rate Standardized Measure	10.00%
Estimate of Proved Reserves Natural Gas Price (in USD per Thousands Cubic Feet) | $ / Mcf	1.76	1.75
Estimate of Proved Reserves Crude Oil Price (in USD per Barrel of Oil) | $ / bbl	72.11	74.71