XML 33 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 3 Months Ended
Mar. 31, 2013
May 02, 2013
Ordinary Shares
May 02, 2013
American Depository Shares
Document Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Mar. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q1    
Trading Symbol AMRN    
Entity Registrant Name AMARIN CORP PLC\UK    
Entity Central Index Key 0000897448    
Current Fiscal Year End Date --03-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   371,108 150,312,023