Note 8 - Long-term Investments (Details) - Summary of Investment in and Advance to Equity Investment Affiliates - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity method investments:
Investment in equity method investees	$ 778	$ 806
Advance to equity method investees	80	85
Impairment on equity method investments	(838)
Total equity method investments	20	891	$ 845
Cost method investments:
Investment in cost method investees	1,113	18	$ 0
Total long-term investments	$ 1,133	$ 909