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Note 3 - Summary of Significant Accounting Policies (Details)
12 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2014
CNY
Dec. 31, 2014
Shanghai Borongdingsi [Member]
Dec. 31, 2013
Sheng Tian Hubei [Member]
USD ($)
Sep. 30, 2013
Sheng Tian Hubei [Member]
Dec. 31, 2014
Minimum [Member]
Dec. 31, 2014
Maximum [Member]
Note 3 - Summary of Significant Accounting Policies (Details) [Line Items]                
Consolidated Subsidiary Ownership Percentage       51.00%cnet_ConsolidatedSubsidiaryOwnershipPercentage
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= cnet_ShanghaiBorongdingsiMember
       
Maturity of Time Deposits             3 months 12 months
Equity Method Investment, Ownership Percentage             20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Other than Temporary Impairment Losses, Investments $ 0us-gaap_ImpairmentOfInvestments $ 0us-gaap_ImpairmentOfInvestments            
Impairment of Long-Lived Assets Held-for-use 989,000us-gaap_ImpairmentOfLongLivedAssetsHeldForUse 0us-gaap_ImpairmentOfLongLivedAssetsHeldForUse            
Goodwill, Impairment Loss 4,650,000us-gaap_GoodwillImpairmentLoss 0us-gaap_GoodwillImpairmentLoss            
Deconsolidation, Gain (Loss), Amount 266,000us-gaap_DeconsolidationGainOrLossAmount (543,000)us-gaap_DeconsolidationGainOrLossAmount            
Percentage Of Voting Interests Acquired           49.00%cnet_PercentageOfVotingInterestsAcquired
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= cnet_ShengTianHubeiMember
   
Gain Or Loss Changes In Parent's Ownership Interest In A Subsidiary         260,000cnet_GainOrLossChangesInParentsOwnershipInterestInASubsidiary
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= cnet_ShengTianHubeiMember
     
Advertising Expense 3,938,000us-gaap_AdvertisingExpense 450,000us-gaap_AdvertisingExpense            
Research and Development Expense 2,659,000us-gaap_ResearchAndDevelopmentExpense 1,995,000us-gaap_ResearchAndDevelopmentExpense            
Statute Of Limitations Special Circumstances Underpayment Of Taxes Threshold (in Yuan Renminbi)     100,000cnet_StatuteOfLimitationsSpecialCircumstancesUnderpaymentOfTaxesThreshold          
Unrecognized Tax Benefits $ 0us-gaap_UnrecognizedTaxBenefits $ 0us-gaap_UnrecognizedTaxBenefits