Quarterly report pursuant to Section 13 or 15(d)

Braeburn License (Details Textual)

Braeburn License (Details Textual) (USD $)
1 Months Ended 3 Months Ended
Dec. 31, 2012
Mar. 31, 2013
Braeburn License (Textual) [Abstract]    
License revenue, recognized   $ 3,750,000
Deferred contract revenue 14,375,000 10,625,000
Collaborative Arrangement, Co-promotion [Member]
Braeburn License (Textual) [Abstract]    
Non-refundable up-front payment 15,750,000  
License and services revenue 15,000,000  
Milestone payment 50,000,000  
Additional amount received upon achievement of sales milestones 130,000,000  
Additional amount in regulatory milestones 35,000,000  
Potential milestone payments 75,000,000  
Estimated revenue recognition period for upfront payment 12 months  
Revenues to be recognized per month for upfront payment 1,250,000  
License revenue, recognized   4,400,000
Deferred contract revenue   $ 10,600,000
Maximum receipt time for milestone payment 10 days  
Development committee disbandment period after specified product transfer date   6 years