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Note 9 - Long-term Investments (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Note 9 - Long-term Investments (Details) [Line Items]    
Income (Loss) from Equity Method Investments $ 47,000us-gaap_IncomeLossFromEquityMethodInvestments $ (183,000)us-gaap_IncomeLossFromEquityMethodInvestments
Cost Method Investments 18,000us-gaap_CostMethodInvestments  
Cost Method Investment, Ownership Percentage 10.00%cnet_CostMethodInvestmentOwnershipPercentage  
Shenzhen Mingshan [Member]    
Note 9 - Long-term Investments (Details) [Line Items]    
Equity Method Investment, Ownership Percentage 23.18%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ShenzhenMingshanMember
25.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ShenzhenMingshanMember
Income (Loss) from Equity Method Investments (4,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ShenzhenMingshanMember
(40,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ShenzhenMingshanMember
Zhao Shang Ke Hubei [Member]    
Note 9 - Long-term Investments (Details) [Line Items]    
Equity Method Investment, Ownership Percentage 25.50%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ZhaoShangKeHubeiMember
 
Income (Loss) from Equity Method Investments 51,000us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ZhaoShangKeHubeiMember
(143,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_ZhaoShangKeHubeiMember
Beijing Saturday [Member]    
Note 9 - Long-term Investments (Details) [Line Items]    
Cost Method Investments $ 18,000us-gaap_CostMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_BeijingSaturdayMember
 
Cost Method Investment, Ownership Percentage 10.00%cnet_CostMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= cnet_BeijingSaturdayMember