Note 1 - Summary of Significant Accounting Policies - Summary of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated other comprehensive gain/(loss)	$ (50,487)	$ (65,341)	$ (3,729)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Unrealized gains (losses) on securities available for sale	(63,906)	(82,710)	(4,720)
Tax effect	$ 13,419	$ 17,369	$ 991