Note 6 - Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Premises and equipment, gross	$ 96,646	$ 96,442
Right-of-use operating lease asset	12,100	12,737
Accumulated depreciation and amortization	(38,631)	(37,824)
Total premises and equipment	58,015	58,618
Land [Member]
Premises and equipment, gross	10,620	10,241
Building and Building Improvements [Member]
Premises and equipment, gross	51,843	50,809
Furniture and Equipment [Member]
Premises and equipment, gross	21,415	22,032
Construction in Progress [Member]
Premises and equipment, gross	$ 668	$ 623

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 of lessee's right to use underlying asset under operating lease.

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