Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Mar. 19, 2015
Document And Entity Information [Abstract]    
Document Type 10-K  
Amendment Flag false  
Document Period End Date Dec. 31, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus FY  
Trading Symbol CFRX  
Entity Registrant Name CONTRAFECT Corp  
Entity Central Index Key 0001478069  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   20,229,041dei_EntityCommonStockSharesOutstanding
Entity Public Float $ 0dei_EntityPublicFloat