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Note 6 - Securities Sold Under Agreements to Repurchase (Tables) | 9 Months Ended
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Sep. 30, 2021
Notes Tables |
Schedule of Repurchase Agreements [Table Text Block] |
|  | Nine Months Ended September 30, 2021 |  |  | Twelve Months Ended December 31, 2020 |
Outstanding balance at end of period |  | $ | 175,850,000 |  |  | $ | 118,365,000 |
Average interest rate at end of period |  |  | 0.11 | % |  |  | 0.12 | %
Average daily balance during the period |  | $ | 151,522,000 |  |  | $ | 132,880,000 |
Average interest rate during the period |  |  | 0.11 | % |  |  | 0.12 | %
Maximum daily balance during the period |  | $ | 195,570,000 |  |  | $ | 173,186,000 |

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