Note 6 - Summary of Unrealized and Realized Gains and Losses Recognized in Net Income on Equity Securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Equity Securities [Abstract]
Net (loss) gains recognized during the period on equity securities	$ 347
Less: Net (losses) gains recognized during the period on equity securities sold during the period	377
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date	$ (30)