Note 5 - Goodwill and Intangible Assets - Changes to Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance	$ 0	$ 25,010	$ 30,676
Impact of foreign currency translation and adjustment	0	(2,456)	(5,666)
Impairment		(22,554)
Balance	$ 0	$ 0	$ 25,010