Preferred Stock and Stockholders' Equity (Deficit) - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions				12 Months Ended
	Nov. 11, 2018	May 11, 2017	Jun. 29, 2016	Dec. 31, 2018	Dec. 31, 2017	Apr. 26, 2006
Equity [Line Items]
Shares of authorized capital stock						280,000,000
Common stock, shares authorized				250,000,000	250,000,000	250,000,000
Common stock par value per share	$ 0.001			$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized				30,000,000	30,000,000	30,000,000
Preferred stock par value				$ 0.001	$ 0.001	$ 0.001
Stock issued during period		9,708,738
Issuance & sale of common stock in public offering price per share		$ 5.15
Net proceeds from issuance of common stock		$ 47.3
Number of securities into which the class of warrant converted	18,939,394
Warrant Exercise Price per share	$ 2.64
Proceeds from warrant Exercise	$ 47.1
Series 1 Preferred Stock
Equity [Line Items]
Preferred stock, stated value				$ 1,200	$ 1,200
Intrexon Corporation/Precigen | Series 1 Preferred Stock
Equity [Line Items]
Issuance of common stock in licensing agreement (in shares)			100,000	11,415
Preferred stock, stated value			$ 1,200