Note 6 - Bank Premises and Equipment - Components of Bank Premises and Equipments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment Gross	$ 59,648	$ 56,838
Less accumulated depreciation and amortization	(23,734)	(22,606)
Bank premises and equipment, net	35,914	34,232
Land [Member]
Property Plant And Equipment Gross	3,194	3,226
Building [Member]
Property Plant And Equipment Gross	23,231	18,328
Furniture and Fixtures [Member]
Property Plant And Equipment Gross	15,517	15,821
Leasehold Improvements [Member]
Property Plant And Equipment Gross	11,336	10,651
Construction in Progress [Member]
Property Plant And Equipment Gross	$ 6,370	$ 8,812