Note 6 - Premises and Equipment and Premises Held for Sale - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Premises and equipment, gross	$ 142,603	$ 142,054
Accumulated depreciation and amortization	(41,429)	(40,442)
Total premises and equipment	101,174	101,612
Premises and Equipment, Net [Member]
Right-of-use operating lease asset	21,007	19,694
Land [Member]
Premises and equipment, gross	22,517	23,011
Building and Building Improvements [Member]
Premises and equipment, gross	71,695	72,322
Furniture and Equipment [Member]
Premises and equipment, gross	24,602	25,367
Construction in Progress [Member]
Premises and equipment, gross	$ 2,782	$ 1,660