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v3.25.1

Commitments and contingencies (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($)
Commitments and contingencies |
Balance, December 31, 2023 | $ 0
Net income (loss) | 0
Foreign currency translation | 0
Balance, December 31, 2024 | $ 0

X
- References No definition available. + Details
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Namespace Prefix: | clwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration