Consolidated Majority-Owned Subsidiaries - Summary of Unaudited Condensed Pro Forma Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition, Pro Forma Information [Line Items]
Net loss	$ (52,935)	$ (6,519)	$ (49,686)	$ (42,881)
Net loss attributable to noncontrolling interests	892	556	1,758	607
Accretion of dividends on redeemable convertible preferred stock		(7,942)		(14,347)
Net loss attributable to common shareholders	(52,043)	(13,905)	(47,928)	(56,621)
AquaBounty | Pro Forma
Business Acquisition, Pro Forma Information [Line Items]
Revenues				10,575
Net loss				(50,418)
Net loss attributable to noncontrolling interests				989
Net loss attributable to Intrexon				(49,429)
Accretion of dividends on redeemable convertible preferred stock				(14,347)
Net loss attributable to common shareholders				$ (63,776)