XML 104 R92.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Commitments and contingencies (Details Narrative) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 USD ($) | Dec. 31, 2015 CNY (¥)
Rental expenses | $ | $ 324 |  | $ 297 |  | $ 297 |
ZHEJIANG TIANLAN |  |  |  |  |  |
Rental expenses |  | ¥ 0 |  | ¥ 0 |  | ¥ 0
ZHEJIANG JIAHUAN |  |  |  |  |  |
Rental expenses |  | ¥ 0 |  | ¥ 0 |  | ¥ 0

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_SubsidiaryIssuerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=CLWT_Subsidiary2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |