Note 9 - Long-term Investments - Movement in Cost Method Investments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 CNY (¥)	Sep. 30, 2017 USD ($)
Cost method investments, balance			$ 1,340
Withdraw of cash investment			(452)
Exchange translation adjustment			61
Cost method investments, balance	$ 949		949
Beijing Saturday [Member]
Cost method investments, balance			16
Withdraw of cash investment
Exchange translation adjustment			1
Cost method investments, balance	17		17
Guohua Shiji [Member]
Cost method investments, balance			27
Withdraw of cash investment
Exchange translation adjustment			1
Cost method investments, balance	28		28
ChinaNet Chuang Tou [Member]
Cost method investments, balance			1,297
Withdraw of cash investment	(450)	¥ (3,000,000)	(452)
Exchange translation adjustment			59
Cost method investments, balance	$ 904		$ 904