Concentration of Credit Risk (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Contract Revenues | Customer Concentration Risk | Collaboration Partner A
Concentration of risk
Percentage of concentration risk	0.00%	0.00%	80.00%	52.00%
Contract Revenues | Customer Concentration Risk | Collaboration Partner B
Concentration of risk
Percentage of concentration risk	100.00%	100.00%	20.00%	48.00%
Sales Revenue Goods Services Net | Customer Concentration Risk | Customer A
Concentration of risk
Percentage of concentration risk	27.00%	29.00%	28.00%	29.00%
Sales Revenue Goods Services Net | Customer Concentration Risk | Customer B
Concentration of risk
Percentage of concentration risk	19.00%	23.00%	20.00%	22.00%
Sales Revenue Goods Services Net | Customer Concentration Risk | Customer C
Concentration of risk
Percentage of concentration risk	13.00%	11.00%	13.00%	11.00%
Sales Revenue Goods Services Net | Customer Concentration Risk | Customer D
Concentration of risk
Percentage of concentration risk	9.00%	10.00%	9.00%	10.00%
Accounts Receivable | Credit Concentration Risk | Collaboration Partner A and B
Concentration of risk
Percentage of concentration risk			24.00%		26.00%
Accounts Receivable | Credit Concentration Risk | Customer A B C and D
Concentration of risk
Percentage of concentration risk			53.00%		54.00%