Note 5 - Premises and Equipment - Components of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Premises and Equipment
Land	$ 12,513	$ 13,403
Buildings (useful lives 15 to 39 years)	70,555	67,844
Furniture and equipment (useful lives 3 to 15 years)	47,822	42,667
Premises and equipment	130,890	123,914
Less accumulated depreciation	52,360	51,221
Premises and equipment, net	$ 78,530	$ 72,693