Note 6 - Exploratory/Extension Well Costs - Exploratory Well Costs (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Beginning capitalized exploratory/extension well costs	$ 40,888
Additions to exploratory/extension well costs	25,818
Reclassification to proved properties	(41,299)
Exploratory/extension well costs charged to exploration and abandonment expense	(229)
Ending capitalized exploratory/extension well costs	$ 25,178