XML 30 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 6 Months Ended
Jun. 30, 2012
Aug. 02, 2012
Ordinary Shares
Aug. 02, 2012
American Depository Shares
Document Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jun. 30, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q2    
Trading Symbol AMRN    
Entity Registrant Name AMARIN CORP PLC\UK    
Entity Central Index Key 0000897448    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   390,564 148,429,704