Note 7 - Loans and Allowance for Credit Losses on Loans - Collateral Dependent Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Individually Evaluated for Impairment	$ 32,687	$ 31,245
Financing Receivable, Allowance for Credit Losses	2,360	1,378
Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	32,595	31,141
Non Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	92	104
Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	32,687	31,245
Financing Receivable, Allowance for Credit Losses	2,360	1,378
Commercial Loans [Member]
Financing Receivable, Individually Evaluated for Impairment	92	104
Financing Receivable, Allowance for Credit Losses	0	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	92	104
Commercial Loans [Member] | Collateral Pledged [Member]
Financing Receivable, Individually Evaluated for Impairment	92	104
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Owner Occupied Professional, Medical [Member]
Financing Receivable, Individually Evaluated for Impairment	0	1,969
Financing Receivable, Allowance for Credit Losses	0	212
Commercial Real Estate Owner Occupied Professional, Medical [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	1,969
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	1,969
Financing Receivable, Allowance for Credit Losses	0	212
Commercial Real Estate Owner Occupied, Retail [Member]
Financing Receivable, Individually Evaluated for Impairment	572	4,544
Financing Receivable, Allowance for Credit Losses	23	0
Commercial Real Estate Owner Occupied, Retail [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	572	4,544
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	572	4,544
Financing Receivable, Allowance for Credit Losses	23	0
Commercial Real Estate Owner Occupied, Other [Member]
Financing Receivable, Individually Evaluated for Impairment	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Owner Occupied, Other [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	0	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	0	0
Financing Receivable, Allowance for Credit Losses	0	0
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member]
Financing Receivable, Individually Evaluated for Impairment	17,083	2,939
Financing Receivable, Allowance for Credit Losses	1,456	0
Commercial Real Estate Nonowner Occupied Hotels and Motels [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	17,083	2,939
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	17,083	2,939
Financing Receivable, Allowance for Credit Losses	1,456	0
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	3,906	9,906
Financing Receivable, Allowance for Credit Losses	103	95
Commercial Real Estate Nonowner Occupied, Retail [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	3,906	9,906
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	3,906	9,906
Financing Receivable, Allowance for Credit Losses	103	95
Commercial Real Estate Nonowner Occupied, Other [Member]
Financing Receivable, Individually Evaluated for Impairment	7,823	5,551
Financing Receivable, Allowance for Credit Losses	214	287
Commercial Real Estate Nonowner Occupied, Other [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	7,823	5,551
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	7,823	5,551
Financing Receivable, Allowance for Credit Losses	214	287
Land and Land Improvements [Member]
Financing Receivable, Individually Evaluated for Impairment	708	1,398
Financing Receivable, Allowance for Credit Losses	460	502
Land and Land Improvements [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	708	1,398
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	708	1,398
Financing Receivable, Allowance for Credit Losses	460	502
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	1,247	1,159
Financing Receivable, Allowance for Credit Losses	104	282
Residential 1-4 Family Real Estate, Rental Small Loan [Member] | Real Estate [Member]
Financing Receivable, Individually Evaluated for Impairment	1,247	1,159
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	1,247	1,159
Financing Receivable, Allowance for Credit Losses	104	282
Residential 1-4 Family Real Estate, Rental Large Loan [Member]
Financing Receivable, Individually Evaluated for Impairment	1,256	3,675
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	1,256	3,675
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	1,256	3,675
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