Note 3 - Income Taxes - Major Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Domestic
Foreign	(1,077)	(1,206)
Total current income tax benefit (provision)	(1,077)	(1,206)
Domestic	2,477
Foreign	5,816	438
Total deferred income tax benefit (provision)	8,293	438
Total income tax benefit (provision)	$ 7,216	$ (768)