Note 7 - Income Taxes - Income Tax Provision from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Current	$ 284	$ 28
Deferred	(280)
Total	$ 4	$ 28

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration