Note 17 - Supplemental Crude Oil and Natural Gas Disclosures (Unaudited) - Quantities of Proved Developed and Undeveloped Reserves (Details) Mcfe in Thousands	Dec. 31, 2023 MMBoe	Dec. 31, 2023 Mcfe	Dec. 31, 2022 MMBoe	Dec. 31, 2022 Mcfe	Dec. 31, 2021 MMBoe	Dec. 31, 2021 Mcfe	Dec. 31, 2020 MMBoe Mcfe
Proved Developed Reserves (Millions of Barrels of Oil Equivalent)	79,593		61,258		28,585
Proved Undeveloped Reserves (Millions of Barrels of Oil Equivalent)	74,569		61,700		35,628
Total Proved Reserves (Millions of Barrels of Oil Equivalent)	154,162		122,958		64,213		22,515
Oil [Member]
Proved Developed Reserves (Millions of Barrels of Oil Equivalent)	58,631		47,845		22,610
Proved Undeveloped Reserves (Millions of Barrels of Oil Equivalent)	60,923		50,971		29,215
Total Proved Reserves (Millions of Barrels of Oil Equivalent)	119,554		98,816		51,825		19,032
Natural Gas Liquids [Member]
Proved Developed Reserves (Millions of Barrels of Oil Equivalent)	12,183		7,968		3,540
Proved Undeveloped Reserves (Millions of Barrels of Oil Equivalent)	7,913		6,401		3,838
Total Proved Reserves (Millions of Barrels of Oil Equivalent)	20,096	20,096	14,369	14,369	7,378	7,378	2,160
Natural Gas [Member]
Proved Developed Reserves (Millions of Barrels of Oil Equivalent) | Mcfe		52,671		32,669		14,611
Proved Undeveloped Reserves (Millions of Barrels of Oil Equivalent) | Mcfe		34,400		25,969		15,450
Total Proved Reserves (Millions of Barrels of Oil Equivalent)	87,071	87,071	58,638	58,638	30,061	30,061	7,939