Note 7 - Prepayments and Deposit to Suppliers (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Number of Largest Internet Resources Suppliers	2	2
Prepayment and Deposit to Suppliers	$ 4,754	$ 5,843
Internet Resources Suppliers Prepayment [Member]
Prepayment and Deposit to Suppliers		750
Advisory Contract for New Investors [Member]
Prepayment and Deposit to Suppliers		$ 750

Carrying amount as of the balance sheet date of capitalized payments for supplies which will be consumed in operations within one year or the normal operating cycle, if longer, and deposits to suppliers to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, which will be either consumed in operations or refunded within one year or the normal operating cycle, if longer.

No definition available.

Name:	cnet_PrepaymentAndDepositToSuppliers
Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant