Note 8 - Commitment and Contingencies - Outstanding Loan Commitments, Unused Lines of Credit, and Letters of Credit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Letter of Credit [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	$ 2,234	$ 1,836
Loan Origination Commitments [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	28,779	32,249
Unused lines of Credit [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	80,059	66,754
Construction and Land Development [Member] \| Loan Origination Commitments [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	2,400	532
Commercial Portfolio Segment [Member] \| Loan Origination Commitments [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	2,875	7,250
Commercial Real Estate Portfolio Segment [Member] \| Loan Origination Commitments [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	23,429	24,062
Residential Portfolio Segment [Member] \| Loan Origination Commitments [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	75	405
Home Equity Loan [Member] \| Unused lines of Credit [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	15,491	17,505
Commercial Lines [Member] \| Unused lines of Credit [Member]
Outstanding loan commitments, unused lines of credit, and letters of credit	$ 64,568	$ 49,249