Note 10 - Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	$ (85)
Foreign currency translation adjustment	51
Balance	(34)
AOCI Attributable to Parent [Member]
Balance	(85)
Foreign currency translation adjustment	51
Balance	$ (34)