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Note 10 - Securities Sold Under Agreements to Repurchase - Securities Sold Under Agreements to Repurchase (Details) - Securities Sold under Agreements to Repurchase [Member] - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Outstanding balance at end of period | $ 104,578 |  | $ 133,342
Weighted average interest rate at end of period | 1.14% |  | 1.64%
Average outstanding balance during the period | $ 122,049 | $ 91,082 |
Average interest rate during the period | 1.52% | 0.08% |
Maximum outstanding at any month end during the period | $ 133,740 | $ 142,146 |

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