Note 19 - Concentration of Risk (Details Textual)	Mar. 31, 2019
CHINA
Percent of Cash and Cash Equivalents Held by Major Financial Institutions	56.00%
UNITED STATES
Percent of Cash and Cash Equivalents Held by Major Financial Institutions	44.00%

Represents the percentage of cash and cash equivalents held by major financial institutions.

No definition available.

Name:	cnet_PercentOfCashAndCashEquivalentsHeldByMajorFinancialInstitutions
Namespace Prefix:	cnet_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant