Note 6 - Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Premises and equipment, gross	$ 80,234	$ 75,049
Accumulated depreciation and amortization	(35,470)	(33,394)
Total premises and equipment	44,764	41,655
Land [Member]
Premises and equipment, gross	9,664	8,908
Building and Building Improvements [Member]
Premises and equipment, gross	47,726	45,285
Furniture and Equipment [Member]
Premises and equipment, gross	21,793	19,360
Construction in Progress [Member]
Premises and equipment, gross	$ 1,051	$ 1,496

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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