XML 103 R91.htm IDEA: XBRL DOCUMENT v3.8.0.1

Pension plan (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 (¥)
Aggregate contributions to pension plans and retirement benefit schemes | $	$ 281		$ 314		$ 458
ZHEJIANG TIANLAN
Aggregate contributions to pension plans and retirement benefit schemes		¥ 4,298		¥ 3,905		¥ 3,850
ZHEJIANG JIAHUAN
Aggregate contributions to pension plans and retirement benefit schemes		¥ 1,317		¥ 1,799

X

- Definition

Amount of payment for pension benefits. Excludes other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

+ Details

Name:	us-gaap_PensionContributions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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: