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Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Jun. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | May 10, 2018
Goodwill, Ending Balance | $ 1,107,000 |  |  | $ 1,107,000 |  | $ 1,728,000 |
Net Income (Loss) Attributable to Parent, Total | 27,000 | $ 769,000 | $ (1,300,000) | (1,305,000) | $ 2,870,000 |  |
Goodwill, Impairment Loss |  |  | 0 |  |  |  |
Commercial Portfolio Segment [Member] |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Writeoff |  |  | $ 2,300,000 |  |  |  |
Prime Bank [Member] |  |  |  |  |  |  |
Goodwill, Ending Balance | $ 1,100,000 |  |  | 1,100,000 |  | $ 1,700,000 | $ 2,100,000
Goodwill, Purchase Accounting Adjustments |  |  |  | $ (621,000) |  |  |

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