Note 12 - Income Taxes - Components for the Income Tax (Expense) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal
State	(51)	(30)	(35)
Total current provision	(148)	(146)	(154)
Federal	752
U.K.	2,630
State	540
Total deferred benefit	3,922
Income tax benefit (expense)	3,774	(146)	(154)
Her Majesty's Revenue and Customs (HMRC) [Member]
Foreign
National Tax Agency, Japan [Member]
Foreign	(85)	(116)	(119)
State Administration of Taxation, China [Member]
Foreign	$ (12)

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

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