XML 57 R45.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Summary of significant accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Property, Plant and Equipment |
Office premises | 47 to 51 years
Leasehold improvements | over terms of the leases or the useful lives whichever is less
Furniture, fixtures and office equipment | 3 to 5 years
Motor vehicles | 4 years
Testing equipment | 3 years
ZHEJIANG TIANLAN |
Property, Plant and Equipment |
Land use right | Over terms of the leases
Office premises | 47-50 years, with 5% residual value
Leasehold improvements | over terms of the leases or the useful lives whichever is less, with 5% residual value
Plant and machineries | 5 to 10 years, with 5% residual value
Furniture, fixtures and office equipment | 3 to 5 years, with 5% residual value
Motor vehicles | 1 to 8 years, with 5% residual value
ZHEJIANG JIAHUAN |
Property, Plant and Equipment |
Land use right | 50 years
Buildings | 20 years
Plant and machinery | 5 to 20 years
Office equipment | 3 to 10 years
Motor vehicles | 5 to 10 years

X
- References No definition available. + Details
Name: | CLWT_PropertyPlantAndEquipmentUsefulLifeTableTextblock
Namespace Prefix: | CLWT_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
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: |