Note 5 - Derivative Financial Instruments - Price Risk Derivative Contracts (Details) - Not Designated as Hedging Instrument [Member]	9 Months Ended
	Sep. 30, 2022 MMBTU $ / shares bbl
Crude Oil Derivative Swap Q3 2022 [Member]
Volume (MBbls) (Barrel of Oil) | bbl	1,072.8
Price per Bbl (in dollars per share)	85.85
Natural Gas Derivative Swap Q3 2022 [Member]
Volume (MMBtu) (Millions of British Thermal Unit) | MMBTU	460.0
Price per Bbl (in dollars per share)	9.00
Natural Gas Derivative Swap Q4 2022 [Member]
Volume (MMBtu) (Millions of British Thermal Unit) | MMBTU	450.0
Price per Bbl (in dollars per share)	9.00
Crude Oil Derivative Swap Q4 2022 [Member]
Volume (MBbls) (Barrel of Oil) | bbl	900.0
Price per Bbl (in dollars per share)	73.67
Natural Gas Derivative Swap 2022 [Member]
Volume (MMBtu) (Millions of British Thermal Unit) | MMBTU	450.0
Price per Bbl (in dollars per share)	9.00
Crude Oil Derivative Swap 2022 [Member]
Volume (MBbls) (Barrel of Oil) | bbl	546.0
Price per Bbl (in dollars per share)	67.81
Crude Oil Derivative Swap Q1 2023 [Member]
Volume (MBbls) (Barrel of Oil) | bbl	276.0
Price per Bbl (in dollars per share)	72.30
Crude Oil Derivative Swap Q2 2023 [Member]
Volume (MBbls) (Barrel of Oil) | bbl	1,722.0
Price per Bbl (in dollars per share)	71.59