Note 9 - Long-term Investments (Details) - Movement of Investment in and Advance to Equity Investment Affiliates - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Equity Method Investments [Line Items]
Balance			$ 891,000
Share of income in equity investment affiliates	$ 1,000	$ (43,000)	2,000	$ (58,000)
Investment in equity investment affiliates			20,000
Exchange translation adjustment			1,000
Balance	914,000		914,000
ChinaNet Korea [Member]
Schedule of Equity Method Investments [Line Items]
Investment in equity investment affiliates			20,000
Balance	20,000		20,000
Shenzhen Mingshan [Member]
Schedule of Equity Method Investments [Line Items]
Balance			461,000
Share of income in equity investment affiliates	1,000		2,000	(2,000)
Exchange translation adjustment			1,000
Balance	464,000		464,000
Zhao Shang Ke Hubei [Member]
Schedule of Equity Method Investments [Line Items]
Balance			430,000
Share of income in equity investment affiliates		$ (43,000)		$ (56,000)
Balance	$ 430,000		$ 430,000