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7. Prepayments and other current assets (Details) (CNY) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
ZHEJIANG TIANLAN
Contracts costs incurred plus estimated earnings	229,994CLWT_ContractsCostsIncurredPlusEstimatedEarnings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember	548,026CLWT_ContractsCostsIncurredPlusEstimatedEarnings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember
Less: Progress billings	(62,489)CLWT_LessProgressBillings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember	(424,397)CLWT_LessProgressBillings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember
Cost and estimated earnings in excess of billings	167,505CLWT_CostAndEstimatedEarningsInExcessOfBillings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember	123,629CLWT_CostAndEstimatedEarningsInExcessOfBillings / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember
ZHEJIANG JIAHUAN
Prepayments and other receivables	11,333CLWT_PrepaymentsAndOtherReceivables / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member	5,141CLWT_PrepaymentsAndOtherReceivables / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member
Deposits	3,067us-gaap_DepositAssets / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member	3,185us-gaap_DepositAssets / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member
Prepayments and other current assets	14,400us-gaap_OtherReceivablesNetCurrent / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member	8,326us-gaap_OtherReceivablesNetCurrent / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member

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- Definition

No authoritative reference available.

+ References

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- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8,17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The carrying amount of other receivables, net, due within one year of the balance sheet date (or one operating cycle, if longer) from third parties or arising from transactions not separately disclosed.

+ References

No definition available.

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