Note 5 - Premises and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment, Gross	$ 66,523	$ 69,221
Less: accumulated depreciation, amortization and fair value adjustments	38,723	40,189
Bank premises and equipment, net	27,800	29,032
Land [Member]
Property, Plant and Equipment, Gross	6,732	7,232
Building [Member]
Property, Plant and Equipment, Gross	$ 9,797	10,509
Building [Member] \| Minimum [Member]
Estimated useful life (Year)	10 years
Building [Member] \| Maximum [Member]
Estimated useful life (Year)	25 years
Furniture and Fixtures [Member]
Property, Plant and Equipment, Gross	$ 24,830	24,137
Furniture and Fixtures [Member] \| Minimum [Member]
Estimated useful life (Year)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Estimated useful life (Year)	7 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	$ 25,164	$ 27,343
Leasehold Improvements [Member] \| Minimum [Member]
Estimated useful life (Year)	10 years
Leasehold Improvements [Member] \| Maximum [Member]
Estimated useful life (Year)	20 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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