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Land use right, net (Details) - ZHEJIANG TIANLAN - CNY (¥) ¥ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Land use right	¥ 7,361	¥ 7,361
Less: accumulated amortization	(1,921)	(1,763)
Net	¥ 5,440	¥ 5,598

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- References

No definition available.

+ Details

Name:	CLWT_FiniteLivedIntangibleAssetContractualRightNetLandUseRight
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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- Definition

Gross carrying amount before accumulated amortization as of the balance sheet date of an intangible asset that arises from a contractual arrangement with a third party (not including franchise rights and license agreements).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Details

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