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Note 5 - Allowance for Loan Losses on Loans and Nonperforming Assets - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss | $ 9,094 | $ 8,225 | $ 7,674
Loans, individually evaluated | 10,544 | 3,032 |
Loans, collectively evaluated | 846,631 | 850,161 |
Loans | 857,175 | 853,193 |
Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 572 | 0 |
Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 8,522 | 8,225 |
Real Estate Construction Portfolio Segment[Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 408 | 450 | 422
Loans, individually evaluated | 286 | 0 |
Loans, collectively evaluated | 55,093 | 54,579 |
Loans | 55,379 | 54,579 |
Real Estate Construction Portfolio Segment[Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 0 | 0 |
Real Estate Construction Portfolio Segment[Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 408 | 450 |
Consumer Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 3,162 | 2,199 | 1,930
Loans, individually evaluated | 1,183 | 186 |
Loans, collectively evaluated | 240,381 | 220,866 |
Loans | 241,564 | 221,052 |
Consumer Real Estate Portfolio Segment [Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 74 | 0 |
Consumer Real Estate Portfolio Segment [Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 3,088 | 2,199 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 3,576 | 3,642 | 3,121
Loans, individually evaluated | 8,805 | 2,583 |
Loans, collectively evaluated | 410,325 | 435,305 |
Loans | 419,130 | 437,888 |
Commercial Real Estate Portfolio Segment [Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 367 | 0 |
Commercial Real Estate Portfolio Segment [Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 3,209 | 3,642 |
Commercial Non Real Estate Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 682 | 930 | 1,099
Loans, individually evaluated | 227 | 263 |
Loans, collectively evaluated | 41,328 | 57,389 |
Loans | 41,555 | 57,652 |
Commercial Non Real Estate Segment [Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 126 | 0 |
Commercial Non Real Estate Segment [Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 556 | 930 |
Public Sector and IDA Portfolio Segment[Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 333 | 319 | 297
Loans, individually evaluated | 0 | 0 |
Loans, collectively evaluated | 60,551 | 48,074 |
Loans | 60,551 | 48,074 |
Public Sector and IDA Portfolio Segment[Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 0 | 0 |
Public Sector and IDA Portfolio Segment[Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 333 | 319 |
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 583 | 506 | 444
Loans, individually evaluated | 43 | 0 |
Loans, collectively evaluated | 38,953 | 33,948 |
Loans | 38,996 | 33,948 |
Consumer Non Real Estate Portfolio Segment [Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 5 | 0 |
Consumer Non Real Estate Portfolio Segment [Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 578 | 506 |
Unallocated Financing Receivables [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 350 | 179 | $ 361
Unallocated Financing Receivables [Member] | Individually Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | 0 | 0 |
Unallocated Financing Receivables [Member] | Collectively Evaluated [Member] |  |  |
Financing Receivable, Allowance for Credit Loss | $ 350 | $ 179 |

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