Annual report pursuant to Section 13 and 15(d)

SPONSORED RESEARCH AND LICENSE AGREEMENTS (Details)

v3.8.0.1
SPONSORED RESEARCH AND LICENSE AGREEMENTS (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2017
Dec. 31, 2016
Jun. 30, 2016
Sep. 30, 2015
Mar. 31, 2015
Mar. 31, 2017
Jun. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Sep. 30, 2016
Collaborative arrangement                      
Collaborations                      
Maximum amount of contingent payments receivable                   $ 532,400,000  
BerGenBio A S Worldwide License Agreement                      
Collaborations                      
Revenue recognized             $ 3,700,000        
Specified Development Events | Collaborative arrangement                      
Collaborations                      
Maximum amount of contingent payments receivable                   145,500,000  
Specified Regulatory Events | Collaborative arrangement                      
Collaborations                      
Maximum amount of contingent payments receivable                   345,600,000  
Specified Product Launch Events | Collaborative arrangement                      
Collaborations                      
Maximum amount of contingent payments receivable                   $ 41,300,000  
Bristol-Myers Squibb Company                      
Collaborations                      
Upfront fee received         $ 30,000,000            
Contingent payments                 $ 309,000,000    
Deferred revenue related to upfront payment                     $ 30,000,000
Revenue recognized   $ 3,000,000           $ 13,400,000 16,600,000    
Bristol-Myers Squibb Company | Research Activities                      
Collaborations                      
Revenue recognized               $ 290,000 822,000    
Aclaris                      
Collaborations                      
Upfront fee received       $ 8,000,000              
Contingent payments                 80,000,000    
Revenue recognized                 $ 8,000,000    
BerGenBio                      
Collaborations                      
Upfront fee received     $ 1,700,000                
Collaborative payment received $ 3,300,000                    
Revenue recognized           $ 3,300,000          
Payment received from exercise of option rights     $ 2,000,000