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Note 18 - Warrants (Detail) - Warrants issued and outstanding (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013
Warrants Outstanding [Member] | Begining Balance [Member] |
Balance | 2,363,456
Balance (in Dollars per share) | $ 3.52
Balance | 1 year 229 days
Balance | 1 year 229 days
Warrants Outstanding [Member] | Ending Balance [Member] |
Balance | 1 year 142 days
Balance | 2,363,456
Balance (in Dollars per share) | $ 3.52
Balance | 1 year 142 days
Warrants Exercisable [Member] | Begining Balance [Member] |
Balance | 2,363,456
Balance (in Dollars per share) | $ 3.52
Balance | 1 year 229 days
Balance | 1 year 229 days
Warrants Exercisable [Member] | Ending Balance [Member] |
Balance | 1 year 142 days
Balance | 2,363,456
Balance (in Dollars per share) | $ 3.52
Balance | 1 year 142 days

X
- Definition Weighted average exercise price of exercisable warrants outstanding as of the reporting date. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice
Namespace Prefix: | cnet_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Average remaining contractual life of warrants outstanding as of the reporting date. + References No definition available. + Details
Name: | cnet_ClassOfWarrantOrRightOutstandingAverageRemainingContractualLife
Namespace Prefix: | cnet_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of each class of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant