Concentration of Credit Risk (Tables)

9 Months Ended

Sep. 30, 2016

Concentration of credit Risk

Schedule of concentration of credit risk related to collaborative partners

	Percentage of Total				Percentage of Total
	Contract Revenues for the				Contract Revenues for the
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Collaboration Partner A	—	%	61	%	7	%	76	%
Collaboration Partner B	100	%	39	%	93	%	24	%

Schedule of concentration of credit risk related to specialty pharmacy customers

	Percentage of Total Net				Percentage of Total Net
	Product Revenues for the				Product Revenues for the
	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2016		2015		2016		2015
Customer A	25	%	29	%	26	%	28	%
Customer B	19	%	18	%	18	%	19	%
Customer C	13	%	13	%	13	%	13	%
Customer D	8	%	9	%	8	%	9	%