Note 6 - Loans and Allowance for Credit Losses on Loans (ACLL) - Collateral Dependent Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Individually Evaluated for Impairment	$ 35,654	$ 32,687
Financing Receivable, Allowance for Credit Losses	5,161	2,360
Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	29,658	32,595
Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	5,996	92
Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	35,654	32,687
Financing Receivable, Allowance for Credit Losses	5,161	2,360
Commercial Loans [Member]
Financing Receivable, Individually Evaluated for Impairment	5,996	92
Financing Receivable, Allowance for Credit Losses	2,614	0
Commercial Loans [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Loans [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	5,996	92
Commercial Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	5,996	92
Financing Receivable, Allowance for Credit Losses	2,614	0
Commercial Real Estate Owner Occupied Professional, Medical [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Owner Occupied Professional, Medical [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	572
Commercial Real Estate Owner Occupied Professional, Medical [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Owner Occupied Professional, Medical [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	572
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Owner Occupied, Retail [Member]
Financing Receivable, Individually Evaluated for Impairment	566	572
Financing Receivable, Allowance for Credit Losses	22	23
Commercial Real Estate Owner Occupied, Retail [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	566	0
Commercial Real Estate Owner Occupied, Retail [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Owner Occupied, Retail [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	566	0
Financing Receivable, Allowance for Credit Losses	22	23
Commercial Real Estate Owner Occupied, Other [Member]
Financing Receivable, Individually Evaluated for Impairment	1,250	0
Financing Receivable, Allowance for Credit Losses	167	0
Commercial Real Estate Owner Occupied, Other [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	1,250	0
Commercial Real Estate Owner Occupied, Other [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Owner Occupied, Other [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	1,250	0
Financing Receivable, Allowance for Credit Losses	167	0
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member]
Financing Receivable, Individually Evaluated for Impairment	17,041	17,083
Financing Receivable, Allowance for Credit Losses	1,435	1,456
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	17,041	17,083
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	17,041	17,083
Financing Receivable, Allowance for Credit Losses	1,435	1,456
Commercial Real Estate Nonowner Occupied Mini Storage [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Nonowner Occupied Mini Storage [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Nonowner Occupied Mini Storage [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Nonowner Occupied Mini Storage [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Multifamily [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Multifamily [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Multifamily [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Multifamily [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Nonowner Occupied, Retail [Member]
Financing Receivable, Individually Evaluated for Impairment	3,680	3,906
Financing Receivable, Allowance for Credit Losses	97	103
Commercial Real Estate Nonowner Occupied, Retail [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	3,680	3,906
Commercial Real Estate Nonowner Occupied, Retail [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Nonowner Occupied, Retail [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	3,680	3,906
Financing Receivable, Allowance for Credit Losses	97	103
Commercial Real Estate Nonowner Occupied, Other [Member]
Financing Receivable, Individually Evaluated for Impairment	4,580	7,823
Financing Receivable, Allowance for Credit Losses	211	214
Commercial Real Estate Nonowner Occupied, Other [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	4,580	7,823
Commercial Real Estate Nonowner Occupied, Other [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Commercial Real Estate Nonowner Occupied, Other [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	4,580	7,823
Financing Receivable, Allowance for Credit Losses	211	214
Land and Land Improvements [Member]
Financing Receivable, Individually Evaluated for Impairment	676	708
Financing Receivable, Allowance for Credit Losses	428	460
Land and Land Improvements [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	676	708
Land and Land Improvements [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Land and Land Improvements [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	676	708
Financing Receivable, Allowance for Credit Losses	428	460
Construction Loans [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Construction Loans [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Construction Loans [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Construction Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Residential 1-4 Family Real Estate, Personal Residence [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Residential 1-4 Family Real Estate, Personal Residence [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Residential 1-4 Family Real Estate, Personal Residence [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Residential 1-4 Family Real Estate, Personal Residence [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Residential 1-4 Family Real Estate, Rental Small Loan [Member]
Financing Receivable, Individually Evaluated for Impairment	1,237	1,247
Financing Receivable, Allowance for Credit Losses	187	104
Residential 1-4 Family Real Estate, Rental Small Loan [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	1,237	1,247
Residential 1-4 Family Real Estate, Rental Small Loan [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Residential 1-4 Family Real Estate, Rental Small Loan [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	1,237	1,247
Financing Receivable, Allowance for Credit Losses	187	104
Residential 1-4 Family Real Estate, Rental Large Loan [Member]
Financing Receivable, Individually Evaluated for Impairment	628	1,256
Financing Receivable, Allowance for Credit Losses	0	0
Residential 1-4 Family Real Estate, Rental Large Loan [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	628	1,256
Residential 1-4 Family Real Estate, Rental Large Loan [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Residential 1-4 Family Real Estate, Rental Large Loan [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	628	1,256
Financing Receivable, Allowance for Credit Losses	0	0
Home Equity Loan [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Home Equity Loan [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Home Equity Loan [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Home Equity Loan [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Consumer Portfolio Segment [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Consumer Portfolio Segment [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Consumer Portfolio Segment [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Credit Card Receivable [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Credit Card Receivable [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Credit Card Receivable [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Credit Card Receivable [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Bank Overdrafts [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Bank Overdrafts [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Bank Overdrafts [Member] | Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Bank Overdrafts [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	$ 0	$ 0