Business - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended
	Jan. 25, 2012	Sep. 30, 2012
Nature Of Business [Line Items]
Accumulated deficit		253.5
Intrexon Corporation [Member]
Nature Of Business [Line Items]
Stock Issued During Period, Shares, New Issues	1,923,075	3,636,926