XML 39 R61.htm IDEA: XBRL DOCUMENT v2.4.1.9

1. Organisation and principal activities (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Euro Tech (Far East) Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_EuroTechFarEastLimitedMember
Euro Tech (China) Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_EuroTechChinaLimitedMember
ChinaH2O.com Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ChinaH2OLimitedMember
Euro Tech Trading (Shanghai) Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_EuroTechTradingLimitedMember
Shanghai Euro Tech Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ShanghaiEuroTechLimitedMember
Shanghai Euro Tech Environmental Engineering Company Limited
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ShanghaiEuroTechEnvironmentalEngineeringCompanyLimitedMember
Chongqing Euro Tech Rizhi Technology Co., Ltd
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ChongqingEuroTechRizhiMember
Rizhi Euro Tech Instrument (Shaanxi) Co., Ltd
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_RizhiEuroTechInstrumentMember
Guangzhou Euro Tech Environmental Equipment Co., Ltd
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_GuangzhouEuroTechEnvironmentalMember
Yixing Pact Environmental Technology Co., Ltd
Percentage of equity ownership	58.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_YixingPactEnvironmentalMember
Pact Asia Pacific Limited
Percentage of equity ownership	58.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_PactAsiaPacificLimitedMember
Zhejiang Tianlan Environmental Protection Technology Co. Ltd.
Percentage of equity ownership	20.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ZhejiangTianlanEnvironmentalProtectionTechnologyMember
Zhejaing Jia Huan Electronic Co. Ltd
Percentage of equity ownership	20.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ZhejaingJiaMember
Hangzhou Tianlan Environmental Engineering and Design Company Limited | ZHEJIANG TIANLAN
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_HangzhouTianlanEnvironmentalEngineeringMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_HangzhouTianlanEnvironmentalEngineeringMember
Hangzhou Tianlan Environmental Protection Equipments Company Limited | ZHEJIANG TIANLAN
Percentage of equity ownership	51.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_HangzhouTianlanEnvironmentalProtectionMember	51.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_HangzhouTianlanEnvironmentalProtectionMember
Shihezi Tianlan Environmental Protection Technology Company Limited | ZHEJIANG TIANLAN
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ShiheziTianlanEnvironmentalMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ShiheziTianlanEnvironmentalMember
Da Tong Tianlan Environmental Protection Technology Service | ZHEJIANG TIANLAN
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = us-gaap_SubsidiaryIssuerMember / us-gaap_SubsidiarySaleOfStockAxis = CLWT_DaTongTianlanMember
Jinhua Jiahuan Puzhau | ZHEJIANG JIAHUAN
Percentage of equity ownership	80.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member / us-gaap_SubsidiarySaleOfStockAxis = CLWT_JinhuaJiahuanPuzhauMember	80.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member / us-gaap_SubsidiarySaleOfStockAxis = CLWT_JinhuaJiahuanPuzhauMember
Zhejiang Jiahuan Xinyu Environmental | ZHEJIANG JIAHUAN
Percentage of equity ownership	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ZhejiangJiahuanXinyEnvironmentalMember	100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_StatementScenarioAxis = CLWT_Subsidiary2Member / us-gaap_SubsidiarySaleOfStockAxis = CLWT_ZhejiangJiahuanXinyEnvironmentalMember

X

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ChinaH2OLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ChongqingEuroTechRizhiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_DaTongTianlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_EuroTechChinaLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_EuroTechFarEastLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_EuroTechTradingLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_GuangzhouEuroTechEnvironmentalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_HangzhouTianlanEnvironmentalEngineeringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_HangzhouTianlanEnvironmentalProtectionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_JinhuaJiahuanPuzhauMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_PactAsiaPacificLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_RizhiEuroTechInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ShanghaiEuroTechEnvironmentalEngineeringCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ShanghaiEuroTechLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ShiheziTianlanEnvironmentalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_YixingPactEnvironmentalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ZhejaingJiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ZhejiangJiahuanXinyEnvironmentalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=CLWT_ZhejiangTianlanEnvironmentalProtectionTechnologyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: