Note 5 - Derivative Financial Instruments - Price Risk Derivative Contracts (Details) - Not Designated as Hedging Instrument [Member] - Forecast [Member]	3 Months Ended
	Mar. 31, 2027 MMBTU $ / bbl $ / MMBTU bbl	Dec. 31, 2026 MMBTU $ / bbl $ / MMBTU bbl	Sep. 30, 2026 MMBTU $ / bbl $ / MMBTU bbl	Jun. 30, 2026 MMBTU $ / bbl $ / MMBTU bbl	Mar. 31, 2026 MMBTU $ / bbl $ / MMBTU bbl	Dec. 31, 2025 MMBTU $ / bbl $ / MMBTU bbl	Sep. 30, 2025 MMBTU $ / bbl $ / MMBTU bbl
Crude Oil Derivative Swap [Member]
Bbls per day (Barrel of Oil) | bbl							3,000
Price per Bbl (in USD per Barrel of Oil)							75.85
Floor or Strike Price per Bbl (in USD per Barrel of Oil)							0
Ceiling Price per Bbl (in USD per Barrel of Oil)							0
Deferred Premium Payable per Bbl (in USD per Barrel of Oil)							0
Natural Gas Derivative Swap [Member]
MMBtu Per Day (Millions of British Thermal Unit) | MMBTU	19,667	30,000	30,000	30,000	30,000	30,000	30,000
Price per MMBtu (in USD per Millions of British Thermal Unit) | $ / MMBTU	4.3	4.3	4.3	4.3	4.39	4.43	4.43
Crude Oil Derivative Collar [Member]
Bbls per day (Barrel of Oil) | bbl	2,000	2,000	6,000	6,000	13,000	13,000	7,000
Price per Bbl (in USD per Barrel of Oil)	0	0	0	0	0	0	0
Floor or Strike Price per Bbl (in USD per Barrel of Oil)	59	59	59.67	59.67	60.62	60.62	65
Ceiling Price per Bbl (in USD per Barrel of Oil)	65	65	68.33	68.33	70.32	70.32	90.08
Deferred Premium Payable per Bbl (in USD per Barrel of Oil)	0	0	0	0	0	0	2.28
Crude Oil Derivative Put [Member]
Bbls per day (Barrel of Oil) | bbl							9,000
Price per Bbl (in USD per Barrel of Oil)							0
Floor or Strike Price per Bbl (in USD per Barrel of Oil)							65.78
Ceiling Price per Bbl (in USD per Barrel of Oil)							0
Deferred Premium Payable per Bbl (in USD per Barrel of Oil)							5