Note 9 - Premises and Equipment - Major Categories of Premises and Equipment and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Premises and equipment, gross	$ 101,978	$ 90,176
Less accumulated depreciation	(38,940)	(36,195)
Total premises and equipment, net	63,038	53,981
Land [Member]
Premises and equipment, gross	14,708	13,729
Building and Building Improvements [Member]
Premises and equipment, gross	53,370	44,620
Furniture and Equipment [Member]
Premises and equipment, gross	$ 33,900	$ 31,827