Note 8 - Deposits - Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Non-interest bearing	$ 193,752	$ 148,842
Non-interest bearing deposits	21.70%	18.90%
Interest bearing demand deposits, weighted average rate	0.42%	0.76%
Interest bearing demand deposits, amount	$ 511,928	$ 420,515
Interest bearing demand deposits	57.30%	53.40%
Time deposits, weighted average rate	2.03%	2.17%
Time deposits, amount	$ 187,947	$ 217,767
Time deposits	21.00%	27.70%
Weighted average rate	0.67%	1.01%
Amount	$ 893,627	$ 787,124
Percent	100.00%	100.00%