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Note 12 - Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,789 | $ 2,755 | $ 2,303
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (395) | 348 | 220
Totals | $ 216 | $ 530 | $ 287 | $ 361 | $ 928 | $ 825 | $ 835 | $ 515 | $ 626 | $ 666 | $ 667 | $ 564 | $ 1,394 | $ 3,103 | $ 2,523

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