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Note 8 - Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Goodwill [Table Text Block] |
(Amounts in thousands) |  |  |  |
Balance January 1, 2021 |  | $ | 129,565 |
Acquisitions |  |  | — |
Balance December 31, 2021 |  | $ | 129,565 |
Balance January 1, 2022 |  | $ | 129,565 |
Acquisitions |  |  | — |
Balance December 31, 2022 |  | $ | 129,565 |
Balance January 1, 2023 |  | $ | 129,565 |
Acquisitions |  |  | 14,381 |
Balance December 31, 2023 |  | $ | 143,946 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
(Amounts in thousands) |  |  |  |  |  |  |  |  |  |  |  |
Core deposit intangibles |  | $ | 12,674 |  |  | $ | 12,674 |  |  | $ | 12,674 |
Acquisitions |  |  | 12,700 |  |  |  | — |  |  |  | — |
Accumulated amortization |  |  | (10,229 | ) |  |  | (8,498 | ) |  |  | (7,052 | )
Total other intangible assets, net |  | $ | 15,145 |  |  | $ | 4,176 |  |  | $ | 5,622 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
(Amounts in thousands) |  |  |  |
2024 |  | $ | 2,126 |
2025 |  |  | 1,917 |
2026 |  |  | 1,719 |
2027 |  |  | 1,719 |
2028 |  |  | 1,719 |
2029 and thereafter |  |  | 5,945 |
Total estimated amortization expense |  | $ | 15,145 |

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