Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Results of Operations from Oil and Gas Producing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Oil and natural gas sales	$ 32,316	$ 44,552
Lease operating expense	(15,254)	(16,667)
Gathering, treating, and transportation costs	(557)	(573)
Production taxes	(2,107)	(3,010)
Depletion	(9,779)	(8,530)
Income tax benefit	891	1,893
Results of operations from oil and natural gas producing activities	$ 5,510	$ 17,665