Note 11 - Deposits - Deposits and Weighted Average Interest Rates (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Noninterest checking, weighted average rate	0.00%	0.00%
Noninterest checking, amount	$ 325,603	$ 344,404
Noninterest checking, percent of total	33.20%	36.20%
Interest checking, weighted average rate	0.38%	0.12%
Interest checking, amount	$ 147,497	$ 151,476
Interest checking, percent of total	15.00%	15.90%
Savings accounts, weighted average rate	0.08%	0.06%
Savings accounts, amount	$ 123,389	$ 119,517
Savings accounts, percent of total	12.60%	12.60%
Money market accounts, weighted average rate	0.73%	0.21%
Money market accounts, amount	$ 253,498	$ 249,089
Money market accounts, percent of total	25.80%	26.20%
Amount	$ 849,987	$ 864,486
Percent of total	86.60%	90.90%
Certificates, amount	$ 131,939	$ 86,180
Certificates, percent of total	13.40%	9.10%
Total certificates, weighted average rate	2.59%	0.53%
Total deposits, weighted average rate	0.60%	0.13%
Total deposits	$ 981,926	$ 950,666
Total deposits, percent of total	100.00%	100.00%
Range 1 [Member]
Certificates, amount	$ 53,645	$ 74,481
Certificates, percent of total	5.40%	7.80%
Range 1 [Member] | Minimum [Member]
Certificate interest rate	0.00%
Range 1 [Member] | Maximum [Member]
Certificate interest rate	0.99%
Range 2 [Member]
Certificates, amount	$ 8,049	$ 4,357
Certificates, percent of total	0.80%	0.50%
Range 2 [Member] | Minimum [Member]
Certificate interest rate	1.00%
Range 2 [Member] | Maximum [Member]
Certificate interest rate	1.99%
Range 3 [Member]
Certificates, amount	$ 3,521	$ 6,316
Certificates, percent of total	0.40%	0.70%
Range 3 [Member] | Minimum [Member]
Certificate interest rate	2.00%
Range 3 [Member] | Maximum [Member]
Certificate interest rate	2.99%
Range 4 [Member]
Certificates, amount	$ 5,493	$ 1,026
Certificates, percent of total	0.60%	0.10%
Range 4 [Member] | Minimum [Member]
Certificate interest rate	3.00%
Range 4 [Member] | Maximum [Member]
Certificate interest rate	3.99%
Range 5 [Member]
Certificates, amount	$ 61,231	$ 0
Certificates, percent of total	6.20%	0.00%
Range 5 [Member] | Minimum [Member]
Certificate interest rate	4.00%
Range 5 [Member] | Maximum [Member]
Certificate interest rate	4.99%