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Note 6 - Securities Sold Under Agreements to Repurchase (Tables) | 9 Months Ended
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Sep. 30, 2023
Notes Tables |
Schedule of Repurchase Agreements [Table Text Block] |
|  | Nine Months Ended |  |  | Twelve Months Ended |
|  | September 30, 2023 |  |  | December 31, 2022 |
Outstanding balance at end of period |  | $ | 164,082,000 |  |  | $ | 194,340,000 |
Average interest rate at end of period |  |  | 0.74 | % |  |  | 0.75 | %
Average daily balance during the period |  | $ | 211,680,000 |  |  | $ | 200,499,000 |
Average interest rate during the period |  |  | 1.22 | % |  |  | 0.15 | %
Maximum daily balance during the period |  | $ | 269,324,000 |  |  | $ | 235,577,000 |

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- Definition The entire disclosure for repurchase agreements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration