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v3.23.3

Note 8 - Commitments and Off-balance Sheet Risk (Details Textual) - USD ($) | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
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Financing Receivable, Allowance for Credit Loss | $ 48,008,000 | $ 44,721,000 | $ 42,246,000 | $ 39,120,000 | $ 35,974,000 | $ 35,363,000
Retail and Commercial Lines of Credit and Credit Card Receivables Reserve on Commitments [Member] | Maximum [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss | $ 700,000 |  | $ 100,000 |  |  |

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