Note 6 - Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Balance	$ 43,912	$ 38,670
Acquisition of business		9,715
Translation effect	(3,307)	(4,473)
Impairment charge (see Note 7)	(8,542)	0
Balance	$ 32,063	$ 43,912