Related Party Transactions - Additional Information (Detail) (USD $)			1 Months Ended	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Jan. 25, 2012 Intrexon Corporation [Member]	Sep. 30, 2012 Intrexon Corporation [Member]
Related Party Transaction [Line Items]
Payments for services				$ 11,400,000
Amounts paid for services incurred				4,800,000
Remaining service expenses expected to be incurred	$ 7,235,000	$ 1,313,000		$ 6,600,000
Stock Issued During Period, Shares, New Issues			1,923,075	3,636,926