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Note 28 - Share-based Compensation Expenses (Details) - Fair Value Assumptions of Options Granted (USD $)
12 Months Ended
Dec. 31, 2014
Note 28 - Share-based Compensation Expenses (Details) - Fair Value Assumptions of Options Granted [Line Items]  
Applicable stock price $ 0.908us-gaap_SharePrice
Exercise multiple 2.5cnet_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExerciseMultiple
Tenor (years) 5 years
Risk-free interest rate 1.67%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Expected volatility 98.68%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Value per option $ 0.495us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Employee Stock Option [Member]  
Note 28 - Share-based Compensation Expenses (Details) - Fair Value Assumptions of Options Granted [Line Items]  
Exercise price of the option $ 1.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember