XML 106 R94.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Net income per ordinary share (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Net income per ordinary share |  |  |
Weighted average number of ordinary shares for the purposes of basic and diluted net income per share | 7,732,132 | 7,732,132 | 7,732,132

X
- References No definition available. + Details
Name: | clwt_WeightedAverageNumberOfSharesOutstandingBasicAndDiluted
Namespace Prefix: | clwt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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