Related Party Transactions - Additional Information (Detail) - USD ($)								1 Months Ended	12 Months Ended
	Jan. 08, 2016	Sep. 28, 2015	Jun. 29, 2015	Mar. 27, 2015	Feb. 03, 2015	Jan. 13, 2015	Jan. 06, 2011	Jul. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Commitment to purchase common stock									$ 34,000
Research and Development Expense									106,785,000	$ 32,706,000	$ 42,852,000
Research and Development Service Agreement Aggregate Quarterly Payments									11,250,000
Stock buy back									34,000
Company purchased remaining shares Value									518,000	544,000	498,000
Minimum
Related Party Transaction [Line Items]
Research and Development Expense						$ 15,000,000
License Agreement
Related Party Transaction [Line Items]
Research and Development Expense									$ 67,300,000
Issuance of common stock in licensing agreement (in shares)						11,722,163			11,722,163
M.D. Anderson Cancer Center | Minimum
Related Party Transaction [Line Items]
Ownership percentage									5.00%
Intrexon Corporation
Related Party Transaction [Line Items]
Commitment to purchase common stock				$ 43,500,000			$ 50,000,000
Percentage of commitment for payments from receipts of upfronts, milestones and royalties				50.00%
Stock issued during period					1,440,000
Stock buy back (Shares)			3,711
Stock buy back			$ 34,000
Share buy back discount on closing price			5.00%
Amounts paid for services incurred									$ 16,300,000	12,000,000	$ 7,800,000
Amount due to related party, current									$ 4,600,000	$ 1,900,000
Licensing fee		$ 10,000,000						$ 115,000,000
Intrexon Corporation | Subsequent Event
Related Party Transaction [Line Items]
Company purchased remaining shares	168
Company purchased remaining shares Value	$ 2,000