Note 18 - Taxation (Details) - Deferred Tax Liabilities (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2011
US$(’000)
Balance	$ 1,439us-gaap_DeferredIncomeTaxLiabilities		$ 1,689us-gaap_DeferredIncomeTaxLiabilities
Reversal during the period	(474)cnet_DeferredTaxLiabilitiesReversal	(306)cnet_DeferredTaxLiabilitiesReversal
Exchange translation adjustment	(1)	56
Balance	$ 964us-gaap_DeferredIncomeTaxLiabilities	$ 1,439us-gaap_DeferredIncomeTaxLiabilities	$ 1,689us-gaap_DeferredIncomeTaxLiabilities

Amount of deferred tax liability attributable to taxable temporary differences.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Deferred Tax Liability

-URI http://asc.fasb.org/extlink&oid=6510232

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph b(2)

-Article 7

Name:	us-gaap_DeferredIncomeTaxLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant