v3.6.0.2
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2016
Feb. 15, 2017
Jun. 30, 2016
Document and Entity Information      
Entity Registrant Name AMICUS THERAPEUTICS INC    
Entity Central Index Key 0001178879    
Document Type 10-K/A    
Document Period End Date Dec. 31, 2016    
Amendment Flag true    
Amendment Description Amicus Therapeutics, Inc. (the "Company") is filing this Amendment No. 1 ("Amendment No. 1") to its Annual Report on Form 10-K for the fiscal year ended December 31, 2016, which was originally filed with the Securities and Exchange Commission ("SEC") on March 1, 2017 (the "Original Annual Report"), for the sole purpose of correcting the number of shares of common stock outstanding as of February 15, 2017 which was reported on the cover page of the Original Annual Report. This Amendment No. 1 on Form 10-K/A continues to speak as of the date of the filing of the Original Annual Report, and the Company has not changed the financial statements nor updated the disclosures contained therein to reflect any events that occurred at a later date.    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 542,291,868
Entity Common Stock, Shares Outstanding   142,741,036  
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY