v2.4.0.8
Document and Entity Information
9 Months Ended
Sep. 30, 2015
Nov. 01, 2015
Ordinary Shares
Nov. 01, 2015
American Depository Shares
Document Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 30, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q3    
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 Accelerated Filer    
Entity Common Stock, Shares Outstanding   956,654 182,530,173