Collaboration with Related Party (Details Textual) (Intrexon Corporation, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Collaboration Agreements [Line Items]
Product development expense	$ 4.2	$ 3.7	$ 0.1
Accounts Payable, Trade, Current	$ 1.0	$ 1.3
Obligations for payments of quarterly cash royalties	On all other developed products, the Company will pay Intrexon quarterly cash royalties of 7% on aggregate annualized net sales up to $100 million, and 14% on aggregate annualized net sales greater than $100 million.
Net Sales Upto Hundred Million
Collaboration Agreements [Line Items]
Royalty percentage	7.00%
Net Sales Greater Than Hundred Million
Collaboration Agreements [Line Items]
Royalty percentage	14.00%