Note 14 - Income Taxes - Components for the Income Tax (Expense) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal
State	(119)
Total current provision	1,158	(590)
Deferred:
Federal	1,515	30,665
State	555	8,554
Total deferred benefit	1,259	37,876
Income tax benefit from continuing operations	2,417	37,286
Her Majesty's Revenue and Customs (HMRC) [Member]
Current:
Foreign	1,401	(532)
Deferred:
Foreign	(896)	(1,343)
National Tax Agency, Japan [Member]
Current:
Foreign	(78)	(45)
Deferred:
Foreign	85
State Administration of Taxation, China [Member]
Current:
Foreign	$ (46)	$ (13)