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Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Non-accrual with no allowance |  | $ 3,974 |  | $ 2,295
Non-accrual loans |  | 17,227 |  | 14,242
Past due 90-days-or-more and still accruing interest |  | 1 | [1] | 892
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Home Equity Line of Credit [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 304 |  | 205
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Credit Cards [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 12 |  | 0
Past due 90-days-or-more and still accruing interest |  | 1 | [1] | 7
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 1,370
Non-accrual loans |  | 8,271 |  | 10,232
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 78
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 7,162 |  | 7,707
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 78
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 1,370
Non-accrual loans |  | 1,109 |  | 2,525
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial and Industrial Portfolio Segment [Member] | Term [Member] |  |  |  |
Non-accrual with no allowance |  | 3,737 |  | 403
Non-accrual loans |  | 5,229 |  | 1,182
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 259
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial and Industrial Portfolio Segment [Member] | PPP Loans [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 0 |  | 21
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 28
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 273
Non-accrual loans |  | 58 |  | 348
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 300
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Total Commercial and Industrial Portfolio Segment [Member] |  |  |  |
Non-accrual with no allowance |  | 3,737 |  | 676
Non-accrual loans |  | 5,287 |  | 1,551
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 587
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Residential Real Estate Portfolio Segment [Member] |  |  |  |
Non-accrual with no allowance |  | 237 |  | 249
Non-accrual loans |  | 3,087 |  | 2,020
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 220
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 378 |  | 219
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 220
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member] |  |  |  |
Non-accrual with no allowance |  | 237 |  | 249
Non-accrual loans |  | 2,709 |  | 1,801
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Construction and Development [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 0 |  | 0
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Consumer Portfolio Segment [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 266 |  | 234
Past due 90-days-or-more and still accruing interest |  | 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | 0
Finance Leases Portfolio Segment [Member] |  |  |  |
Non-accrual with no allowance |  | 0 |  | 0
Non-accrual loans |  | 0 |  | 0
Past due 90-days-or-more and still accruing interest |  | $ 0 | [1] | 0
Troubled Debt Restructurings, excluding non-accrual loans | [1] |  |  | $ 0
[1] | Does not included TDRs captured in the non-accrual column.

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