Note 10 - Long-term Investments (Details) - Summary of Investment in and Advance to Equity Investment Affiliates - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Equity method investments:
Investment in equity method investees	$ 761	$ 778
Advance to equity method investees	81	80
Impairment on equity method investments	(842)	(838)
Total equity method investments		20
Cost method investments:
Investment in cost method investees	1,576	1,113
Total long-term investments	$ 1,576	$ 1,133