Note 8 - Long-term Investments - Movement in Cost Method Investments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Cost method investments, balance	$ 1,340
Cost method investments, balance	1,373
ChinaNet Korea [Member]
Cost method investments, balance	16
Exchange translation adjustment	1
Cost method investments, balance	17
Beijing Saturday [Member]
Cost method investments, balance	27
Exchange translation adjustment	1
Cost method investments, balance	28
Chuangshi Meiwei [Member]
Cost method investments, balance	1,297
Exchange translation adjustment	31
Cost method investments, balance	1,328
Guohua Shiji [Member]
Cost method investments, balance	1,340
Exchange translation adjustment	33
Cost method investments, balance	$ 1,373