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Note 16 - Goodwill and Other Intangible Assets (Details Textual) |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 24, 2023 USD ($) | Jan. 22, 2016 | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Goodwill |  |  | $ 3,592,000 |  | $ 3,592,000
Goodwill, Impairment Loss |  |  | 0 |  |
Amortization of Intangible Assets |  |  | 941,000 | $ 459,000 |
Core Deposits [Member] |  |  |  |  |
Impairment of Intangible Assets, Finite-Lived |  |  | 0 |  |
Amortization of Intangible Assets |  |  | $ 941,000 |  | $ 3,464,000
Bank of America [Member] |  |  |  |  |
Number of Businesses Acquired |  | 4 |  |  |
Bank of America [Member] | Core Deposits [Member] |  |  |  |  |
Number of Businesses Acquired |  |  | 4 |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 9 years |  |
Columbia State Bank [Member] |  |  |  |  |
Goodwill | $ 1,280,000 |  |  |  |
Number of Businesses Acquired | 7 |  |  |  |
Columbia State Bank [Member] | Core Deposits [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |  | 10 years |  |
Anchor Bank [Member] | Core Deposits [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 10 years |  |

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