Note 8 - Fair Value Disclosures (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other Investment Sold, Gain (Loss), Fair Value	$ 628	$ (16,219)
Other Investment Sold, Not yet Purchased, Gain (Loss)	$ 683	$ 802