Concentration of Credit Risk (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Contract Revenues | Customer Concentration Risk | Collaboration Partner A
Concentration of risk
Percentage of concentration risk		61.00%	28.00%	8.00%
Contract Revenues | Customer Concentration Risk | Collaboration Partner B
Concentration of risk
Percentage of concentration risk		39.00%	72.00%	92.00%
Sales Revenue | Customer Concentration Risk | Customer A
Concentration of risk
Percentage of concentration risk	23.00%	26.00%	25.00%	27.00%
Sales Revenue | Customer Concentration Risk | Customer B
Concentration of risk
Percentage of concentration risk	16.00%	16.00%	16.00%	17.00%
Sales Revenue | Customer Concentration Risk | Customer C
Concentration of risk
Percentage of concentration risk	13.00%	13.00%	13.00%	13.00%
Sales Revenue | Customer Concentration Risk | Customer D
Concentration of risk
Percentage of concentration risk	9.00%	9.00%	8.00%	9.00%
Accounts Receivable | Credit Concentration Risk | Collaboration Partner A and B
Concentration of risk
Percentage of concentration risk			21.00%		23.00%
Accounts Receivable | Credit Concentration Risk | Customer A B C and D
Concentration of risk
Percentage of concentration risk			46.00%		41.00%