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Note 7 - Goodwill and Intangibles - Core Deposit Intangibles by Reportable Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | $ 13,821 | $ 16,759 | $ 9,349 |
Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 13,821 | 16,759 | 9,349 | $ 11,381
CRBT | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 883 | 1,225 | 1,702 |
CSB | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | 1,430 | 2,027 | 2,653 |
GB | Core Deposits [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Core deposit intangible | $ 11,508 | $ 13,507 | $ 4,994 |

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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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