v3.5.0.2
Document And Entity Information - shares
6 Months Ended
Jun. 30, 2016
Jul. 31, 2016
Document and Entity Information [Abstract]    
Entity Registrant Name INTERCEPT PHARMACEUTICALS INC  
Entity Central Index Key 0001270073  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Trading Symbol icpt  
Entity Common Stock, Shares Outstanding   24,726,376
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2016  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2016