Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income (Loss) Attributable to Parent, Total	$ 849	$ 547	$ 673	$ (258)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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