Note 11 - Income Taxes - Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current	$ (346)		$ 21
Deferred	121	2,523	2,771
Net operating loss	2,255	(647)	(4,009)
Change in federal statutory rate		20,274
Change in valuation allowance		(54,049)	1,238
	$ 2,030	$ (31,899)	$ 21

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount 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 increase (decrease) in the valuation allowance for deferred tax assets.

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Amount 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 increase (decrease) in the income tax rates.

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