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Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	1.00%	0.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	34.00%
Unrecognized Tax Benefits, Ending Balance	$ 1,480		$ 1,480
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 0

X

- 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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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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