XML 29 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 12 Months Ended
Dec. 31, 2011
Mar. 31, 2012
Document And Entity Information    
Entity Registrant Name EURO TECH HOLDINGS CO LTD  
Entity Central Index Key 0001026662  
Document Type 20-F  
Document Period End Date Dec. 31, 2011  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Is Entity a Well-known Seasoned Issuer? No  
Is Entity a Voluntary Filer? No  
Is Entity's Reporting Status Current? Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   2,069,222
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2011