XML 136 R121.htm IDEA: XBRL DOCUMENT
v3.23.1

Other income and other losses (Details 1) - ZHEJIANG TIANLAN ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥)
Impairment loss on short term investments | ¥ 195 | ¥ 0 |  | ¥ 1,340
Impairment loss on contract assets | 3,560 | 1,238 |  | 1,399
Impairment loss on long-term investments | 0 |  | $ 0 | 1,340
Impairment loss on property, plant and equipment | 0 | 0 |  | 2,742
Other losses | ¥ 3,755 | ¥ 1,238 |  | ¥ 5,481

X
- References No definition available. + Details
Name: | clwt_ImpairmentLossOnContractAssets
Namespace Prefix: | clwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | clwt_ImpairmentLossOnLongTermInvestments
Namespace Prefix: | clwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | clwt_ImpairmentLossOnPropertyPlantAndEquipment
Namespace Prefix: | clwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | clwt_ImpairmentLossOnShortTermInvestments
Namespace Prefix: | clwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) related to nonoperating activities, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7,9) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherNonoperatingGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |