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Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	26.80%
Effective Income Tax Rate, Continuing Operations, Forecasted Increase (Decrease) in Rate	16.00%
Effective Income Tax Rate Reconciliation, Percent, Total		10.80%
Effective Tax Rate, Including Loss Jurisdictions	26.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 64
Effective Tax Rate After Discreet Benefits	24.90%

X

- Definition

Represents the increase (decrease) between the prior period effective income tax rate and the current period forecasted effective income tax rate.

+ References

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Represents the effective tax rate after discreet benefits.

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- Definition

The forecasted effective tax rate which includes loss jurisdiction for which no benefit from forecasted current year losses is anticipated.

+ References

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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