Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended
Mar. 01, 2014
Dec. 31, 2013
Jul. 02, 2013
Document and Entity Information      
Entity Registrant Name   Esperion Therapeutics, Inc.  
Entity Central Index Key   0001434868  
Document Type   10-K  
Document Period End Date   Dec. 31, 2013  
Amendment Flag   false  
Current Fiscal Year End Date   --12-31  
Entity Well-known Seasoned Issuer   No  
Entity Voluntary Filers   No  
Entity Current Reporting Status   Yes  
Entity Filer Category   Non-accelerated Filer  
Entity Public Float     $ 204.6
Entity Common Stock, Shares Outstanding 15,394,226    
Document Fiscal Year Focus   2013  
Document Fiscal Period Focus   FY  
Entity Listing, Par Value Per Share $ 0.001