Note 6 - Premises and Equipment - Premises and Equipment (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Premises and equipment	$ 30,954,000	$ 29,821,000
Less accumulated depreciation and amortization	(16,325,000)	(15,534,000)
Premises and equipment, net	14,629,000	14,287,000
Land [Member]
Premises and equipment	4,179,000	4,179,000
Building [Member]
Premises and equipment	18,879,000	18,747,000
Furniture Equipment And Leasehold Improvements [Member]
Premises and equipment	$ 7,896,000	$ 6,895,000

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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