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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Expense (Benefit), Total	$ 5,708	$ 3,020	$ 8,392	$ 4,720
Effective Income Tax Rate Reconciliation, Percent, Total	26.50%	38.60%	26.30%	27.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%		35.00%
Restatement Adjustment [Member]
Income Tax Expense (Benefit), Total					$ (1,900)

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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 domestic federal statutory tax rate applicable to pretax income (loss).

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