Related Party Transactions - Additional Information (Detail) (USD $)	1 Months Ended			3 Months Ended	12 Months Ended
	Oct. 13, 2013	Nov. 07, 2012	Jan. 25, 2012	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Prepaid expenses and other current assets				$ 1,589,000	$ 1,948,000
Intrexon Corporation
Related Party Transaction [Line Items]
Payments for services				1,700,000	2,400,000	11,400,000
Amounts paid for services incurred					7,800,000	6,600,000
Prepaid expenses and other current assets					0	4,800,000
Accrued expense				$ 500,000	$ 600,000
Stock issued during period	2,857,143	3,636,926	1,923,075