Note 8 - Deposits - Scheduled Maturities of Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
2019, amount	$ 71,493
2019, percentage	32.30%
2020, amount	$ 47,799
2020, percentage	21.50%
2021, amount	$ 42,734
2021, percentage	19.30%
2022, amount	$ 11,588
2022, percentage	5.20%
2023, amount	$ 33,410
2023, percentage	15.10%
Thereafter, amount	$ 14,575
Thereafter, percentage	6.60%
Total, amount	$ 221,599	$ 170,687
Total, percentage	100.00%