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Note 2 - Business Combinations - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Core deposit intangible, net | $ 698 |  |
Core Deposits [Member] |  |  |
Core deposit intangible, gross | $ 748 |  |
Core deposit intangible, Accumulated amortization |  | $ 50 |
Core deposit intangible, net |  |  | $ 698

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