Note 9 - Long-term Investments - Summary of Investment in and Advance to Equity Investment Affiliates (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Investment in equity method investees	$ 741	$ 709
Advance to equity method investees	78	75
Impairment on equity method investments	(819)	(784)
Total equity method investments
Investment in cost method investees	1,108	1,492
Impairment on cost method investments	(159)	(152)
Total cost method investments	949	1,340
Total long-term investments	$ 949	$ 1,340