Note 8 - Borrowed Funds Subsequent Event - Borrowed Funds by Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Total, Amount	$ 34,240	$ 60,278
Borrowed Funds [Member]
2019, amount	$ 23,930
2019, weighted average interest rate	2.58%
2020, amount	$ 0
2020, weighted average interest rate	0.00%
2021, amount	$ 0
2021, weighted average interest rate	0.00%
2022, amount	$ 0
2022, weighted average interest rate	0.00%
2023, amount
2023, weighted average interest rate	0.00%
Thereafter, amount	$ 10,310
Thereafter, weighted average interest rate	4.46%
Total, Amount	$ 34,240
Total, weighted average interest rate	3.15%