Note 8 - Long-term Investments - Summary of Long-term Investments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Balance	$ 67	$ 35
Cash investments during the year	2,250	32
Exchange translation adjustment	1
Investments disposed during the year	(38)
Balance	$ 2,280	$ 67

The amount of equity securities without readily determinable fair value disposed of during the period.

No definition available.

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Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the increase (decrease) in the amount of investment in equity security without readily determinable fair value attributable to exchange translation adjustment(s) during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the increase in the amount of investment in equity security without readily determinable fair value attributable to cash investments during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant