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Note 20 - Concentration of Risk (Details Textual) | Jun. 30, 2019
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CHINA |
Percent of Cash and Cash Equivalents Held by Major Financial Institutions | 50.00%
UNITED STATES |
Percent of Cash and Cash Equivalents Held by Major Financial Institutions | 50.00%

X
- Definition Represents the percentage of cash and cash equivalents held by major financial institutions. + References No definition available. + Details
Name: | cnet_PercentOfCashAndCashEquivalentsHeldByMajorFinancialInstitutions
Namespace Prefix: | cnet_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |