Note 15 - Regulatory Matters - Compliance With Regulatory Capital Requirements Under Banking Regulations (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Tier 1 common equity (to risk-weighted assets) Actual, Ratio	4.50%
Tier 1 capital (to risk-weighted assets)	0.06
Bank [Member]
Capital	$ 258,437	$ 244,562
Capital to Risk Weighted Assets	0.147	0.146
Capital Required for Capital Adequacy	$ 140,596	$ 134,238
Capital Required for Capital Adequacy to Risk Weighted Assets	0.08	0.08
Total capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 184,532	$ 176,187
Total capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	10.50%	10.50%
Well Capitalized	$ 175,745	$ 167,797
Total capital (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, Ratio	0.10	0.10
Tier 1 common equity (to risk-weighted assets) Actual, Amount	$ 237,687	$ 223,576
Tier 1 common equity (to risk-weighted assets) Actual, Ratio	13.50%	13.30%
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes, Amount	$ 79,085	$ 75,509
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes, Ratio	4.50%	4.50%
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 123,022	$ 117,458
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	7.00%	7.00%
Tier 1 common equity (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, Amount	$ 114,234	$ 109,068
Tier 1 common equity (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, Ratio	6.50%	6.50%
Tier 1 capital (to risk-weighted assets), Actual, Amount	$ 237,687	$ 223,576
Tier 1 capital (to risk-weighted assets)	0.135	0.133
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, Amount	$ 105,447	$ 100,678
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, Ratio	0.06	0.06
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 149,384	$ 142,628
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	8.50%	8.50%
Tier 1 capital (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, Amount	$ 140,596	$ 134,268
Tier 1 capital (to risk-weighted assets), To be well capitalized under prompt corrective action provisions, Ratio	0.08	0.08
Tier 1 capital (to average assets), Actual, Amount	$ 237,687	$ 223,576
Tier 1 capital (to average assets), Actual, Ratio	0.092	0.091
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 103,653	$ 98,457
Tier 1 capital (to average assets), For capital adequacy purposes, Ratio	0.04	0.04
Tier 1 capital (to average assets), For capital adequacy purposeswith capital conversion buffer, amount	$ 103,653	$ 98,457
Tier 1 capital (to average assets), For capital adequacy purposes with capital conversion buffer, Ratio	4.00%	4.00%
Tier 1 capital (to average assets), To be well capitalized under prompt corrective action provisions, Amount	$ 129,567	$ 123,071
Tier 1 capital (to average assets), To be well capitalized under prompt corrective action provisions, Ratio	0.05	0.05
Parent Company [Member]
Capital	$ 259,790	$ 246,120
Capital to Risk Weighted Assets	0.148	0.147
Capital Required for Capital Adequacy	$ 140,617	$ 134,255
Capital Required for Capital Adequacy to Risk Weighted Assets	0.08	0.08
Total capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 184,560	$ 176,209
Total capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	10.50%	10.50%
Tier 1 common equity (to risk-weighted assets) Actual, Amount	$ 239,039	$ 225,135
Tier 1 common equity (to risk-weighted assets) Actual, Ratio	13.60%	13.40%
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes, Amount	$ 79,097	$ 75,518
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes, Ratio	4.50%	4.50%
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 123,040	$ 117,473
Tier 1 common equity (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	7.00%	7.00%
Tier 1 capital (to risk-weighted assets), Actual, Amount	$ 239,039	$ 225,135
Tier 1 capital (to risk-weighted assets)	0.136	0.134
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, Amount	$ 105,463	$ 100,691
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes, Ratio	0.06	0.06
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Amount	$ 149,406	$ 142,646
Tier 1 capital (to risk-weighted assets), For capital adequacy purposes with capital conversion buffer, Ratio	8.50%	8.50%
Tier 1 capital (to average assets), Actual, Amount	$ 239,039	$ 225,135
Tier 1 capital (to average assets), Actual, Ratio	0.092	0.092
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 103,664	$ 98,465
Tier 1 capital (to average assets), For capital adequacy purposes, Ratio	0.04	0.04
Tier 1 capital (to average assets), For capital adequacy purposeswith capital conversion buffer, amount	$ 103,664	$ 98,465
Tier 1 capital (to average assets), For capital adequacy purposes with capital conversion buffer, Ratio	4.00%	4.00%