Note 9 - Contingent consideration receivables (Detail) - Contingent consideration receivables (USD $)	9 Months Ended
Sep. 30, 2012
US$(’000)
Balance as of December 31, 2011 (audited)	$ 159,000
Recognized from acquisition of VIEs	0
Changes in fair value of contingent consideration receivables recognized	0
Exchange translation adjustment	1,000
Balance as of September 30, 2012 (unaudited)	$ 160,000

Fair value of contingent cash consideration receivable from acquirees pursuant to the terms of the acquisition agreements.

No definition available.

+ Details

Name:	cnet_ContingentConsiderationReceivable
Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the amount of contingent consideration receivables recognized from acquisitions incurred during the reporting period.

+ References

No definition available.

+ Details

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

- Definition

The increase (decrease) to the recorded value of contingent consideration receivables for foreign currency translation adjustments.

+ References

No definition available.

+ Details

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

- Details

Name:	cnet_Us000Abstract
Namespace Prefix:	cnet_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 30

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

+ Details

Name:	us-gaap_FairValueOptionChangesInFairValueGainLoss1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration