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Note 24 - Subsequent Events (Details Textual) - Subsequent Event [Member] | 1 Months Ended
--- | ---
Jul. 31, 2021 shares
Shares Issued, Shares, Settlement of Warrants (in shares) | 40,000.00
Placement Agent Warrants Issued in Connection with 2018 Financing [Member] |
Warrants or Rights, Settled (in shares) | 129,000

X
- Definition The number of shares issued for settlement of warrants. + References No definition available. + Details
Name: | cnet_SharesIssuedSharesSettlementOfWarrants
Namespace Prefix: | cnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of warrants or rights settled during the period. + References No definition available. + Details
Name: | cnet_WarrantsOrRightsSettled
Namespace Prefix: | cnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=cnet_PlacementAgentWarrantsIssuedInConnectionWith2018FinancingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |