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, 2024	Dec. 31, 2023
Oil and natural gas sales	$ 20,619	$ 32,316
Lease operating expense	(11,160)	(15,254)
Gathering, treating, and transportation costs	(205)	(557)
Production taxes	(1,276)	(2,107)
Depletion	(6,369)	(9,779)
Income tax (expense) benefit	(20)	891
Results of operations from oil and natural gas producing activities	$ 1,589	$ 5,510