Quarterly report pursuant to Section 13 or 15(d)

Corporate Collaborations (Details)

v3.2.0.727
Corporate Collaborations (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2015
Feb. 28, 2015
Jun. 30, 2015
Jun. 30, 2015
bristol-Myers Squibb Company        
Collaborations        
Noncreditable and nonrefundable upfront payment by BMS $ 30,000,000      
Deferred revenue related to upfront payment   $ 30,000,000 $ 23,100,000 $ 23,100,000
Revenue recognized     4,800,000 6,900,000
bristol-Myers Squibb Company | Research Activities        
Collaborations        
Revenue recognized     350,000 456,000
bristol-Myers Squibb Company | Minimum        
Collaborations        
Contingent payments by BMS   $ 309,000,000    
Collaborative Arrangement        
Collaborations        
Maximum amount of contingent payments receivable     453,500,000 453,500,000
Collaborative Arrangement | Specified Development Events        
Collaborations        
Maximum amount of contingent payments receivable     140,400,000 140,400,000
Collaborative Arrangement | Specified Regulatory Events        
Collaborations        
Maximum amount of contingent payments receivable     275,600,000 275,600,000
Collaborative Arrangement | Specified Product Launch Events        
Collaborations        
Maximum amount of contingent payments receivable     $ 37,500,000 $ 37,500,000