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Note 15 - Warrant Liabilities - Warrant Activity (Details) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Balance (in shares) | 5,001,705 |
Balance, weighted average remaining contractual life (Year) | 1 year 10 months 9 days | 2 years 4 months 9 days
Weighted average exercise price (in dollars per share) | $ 3.02 |
Exercisable (in shares) | 5,001,705 |
Balance, January 1, 2022 (Year) | 1 year 10 months 9 days | 2 years 4 months 9 days
Exercisable, weighted average exercise price (in dollars per share) | $ 3.02 |
Granted/Vested (in shares) | 0 |
Balance (in shares) | 5,001,705 | 5,001,705
Weighted average exercise price (in dollars per share) | $ 3.02 | $ 3.02
Exercisable (in shares) | 5,001,705 | 5,001,705
Exercisable, weighted average exercise price (in dollars per share) | $ 3.02 | $ 3.02

X
- Definition Number of warrants or rights exercisable. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightExercisable
Namespace Prefix: | cnet_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average exercise price per share of warrants or rights exercisable. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice
Namespace Prefix: | cnet_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term for exercisable warrants outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualTerm
Namespace Prefix: | cnet_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Weighted average exercise price per share of warrants or rights outstanding. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice
Namespace Prefix: | cnet_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term for warrants outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm
Namespace Prefix: | cnet_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant