Note 6 - Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Premises and equipment, gross	$ 96,442	$ 80,234
Right-of-use operating lease asset	12,737	0
Accumulated depreciation and amortization	(37,824)	(35,470)
Total premises and equipment	58,618	44,764
Land [Member]
Premises and equipment, gross	10,241	9,664
Building and Building Improvements [Member]
Premises and equipment, gross	50,809	47,726
Furniture and Equipment [Member]
Premises and equipment, gross	22,032	21,793
Construction in Progress [Member]
Premises and equipment, gross	$ 623	$ 1,051

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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