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Note 6 - Goodwill and Intangibles - Core Deposit Intangibles by Reportable Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | $ 16,759 | $ 9,349 | $ 11,381 |
Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 16,759 | 9,349 | 11,381 | $ 13,466
CRBT | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 1,225 | 1,702 | 2,189 |
CSB | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 2,027 | 2,653 | 3,305 |
SFCB. | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | $ 13,507 | $ 4,994 | $ 5,887 |

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