Represents the amount of application development contract amount.

No definition available.

Name:	cnet_ApplicationDevelopmentContractsContractAmount
Namespace Prefix:	cnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of payment for application development contracts.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow associated with the development of blockchain technology based applications.

+ References

No definition available.

+ Details

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

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cnet_ContractToDevelopBlockchainTechnologyBasedApplicationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis=cnet_ContractToDevelopSocialNetworkBasedApplicationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 24 - Commitments and Contingencies (Details Textual) ¥ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2018 CNY (¥)	Sep. 30, 2017 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CNY (¥)	Feb. 28, 2018 USD ($)
Operating Leases, Rent Expense, Net, Total	$ 96,000	$ 113,000	$ 302,000		$ 304,000
Payment for Blockchain Technology Based Applications Development Costs			3,375,000
Contract to Develop Blockchain Technology Based Applications [Member]
Application Development Contracts, Contract Amount								$ 4,500,000
Payment for Blockchain Technology Based Applications Development Costs			3,380,000
Contract to Develop Social Network Based Applications [Member]
Application Development Contracts, Contract Amount						$ 440,000	¥ 3.0
Payment for Application Development Contracts			$ 350,000	¥ 2.4