Note 3 - Investments in Related Parties - Income Statement Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Total revenue	$ 11,513	$ 11,108
Total expense	12,579	12,992
Net loss	(249)	(953)
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Total revenue	21,260	20,878
Total expense	39,706	33,858
Net loss	$ (18,446)	$ (12,980)