Collaboration Agreement with Related Party (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of directors	7
NRM VII Holdings I, LLC
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of directors that are affiliates of related party	2
Intrexon Corporation
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Expenses for work performed	$ 1.7	$ 1.1
Outstanding trade payables	$ 1.9		$ 1.0