Note 15 - Regulatory Matters - Schedule of Regulatory Capital Requirements (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), actual	$ 158,748	$ 150,129
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), Actual Ratio	0.187	0.182
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), Capital Adequacy	$ 50,913	$ 49,391
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), Capital Adequacy, ratio	0.06	0.06
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), to be well capitalized	$ 67,883	$ 65,854
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets), to be well capitalized, ratio	0.08	0.08
Total Risk-Based Capital (To Risk Weighted Assets), actual	$ 169,405	$ 160,457
Total Risk-Based Capital (To Risk Weighted Assets), Actual Ratio	0.20	0.195
Total Risk-Based Capital (To Risk Weighted Assets), Capital Adequacy	$ 67,883	$ 65,854
Total Risk-Based Capital (To Risk Weighted Assets), Capital Adequacy, ratio	0.08	0.08
Total Risk-Based Capital (To Risk Weighted Assets), to be well capitalized	$ 84,854	$ 82,318
Total Risk-Based Capital (To Risk Weighted Assets), to be well capitalized, ratio	0.10	0.10
Common Equity Tier 1 Capital (To Risk Weighted Assets), actual	$ 158,748	$ 150,129
Common Equity Tier 1 Capital (To Risk Weighted Assets), Actual Ratio	0.187	0.182
Common Equity Tier 1 Capital (To Risk Weighted Assets), Capital Adequacy	$ 38,184	$ 37,043
Common Equity Tier 1 Capital (To Risk Weighted Assets), Capital Adequacy, ratio	0.045	0.045
Common Equity Tier 1 Capital (To Risk Weighted Assets), to be well capitalized	$ 55,155	$ 53,506
Common Equity Tier 1 Capital (To Risk Weighted Assets), to be well capitalized, ratio	0.065	0.065
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets), actual	$ 158,748	$ 150,129
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets), Actual Ratio	0.099	0.098
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets), Capital Adequacy	$ 64,277	$ 61,076
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets), Capital Adequacy, ratio	0.04	0.04
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets) Capital Adequacy Ratio, to be well capitalized	$ 80,346	$ 76,345
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets), to be well capitalized, ratio	0.05	0.05