Stock Option Plans - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended								6 Months Ended			3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2014 Intrexon Stock Option Plans	Dec. 31, 2013 Intrexon Stock Option Plans	Jun. 30, 2014 Intrexon Stock Option Plans Research and Development Expense	Jun. 30, 2013 Intrexon Stock Option Plans Research and Development Expense	Jun. 30, 2014 Intrexon Stock Option Plans Research and Development Expense	Jun. 30, 2013 Intrexon Stock Option Plans Research and Development Expense	Jun. 30, 2014 Intrexon Stock Option Plans General and Administrative Expense	Jun. 30, 2013 Intrexon Stock Option Plans General and Administrative Expense	Jun. 30, 2014 Intrexon Stock Option Plans General and Administrative Expense	Jun. 30, 2013 Intrexon Stock Option Plans General and Administrative Expense	Jun. 30, 2014 Intrexon Stock Option Plans 2008 Equity Incentive Plan	Dec. 31, 2011 Intrexon Stock Option Plans 2008 Equity Incentive Plan	Dec. 31, 2010 Intrexon Stock Option Plans 2008 Equity Incentive Plan	Jun. 30, 2014 Intrexon Stock Option Plans 2013 Omnibus Incentive Plan	Jun. 09, 2014 Intrexon Stock Option Plans 2013 Omnibus Incentive Plan	Jul. 26, 2013 Intrexon Stock Option Plans 2013 Omnibus Incentive Plan	Jun. 30, 2014 AquaBounty Stock Option Plan	Jun. 30, 2014 AquaBounty Stock Option Plan Minimum	Jun. 30, 2014 AquaBounty Stock Option Plan Maximum	Jun. 30, 2014 AquaBounty Stock Option Plan Research and Development Expense	Jun. 30, 2014 AquaBounty Stock Option Plan Research and Development Expense	Jun. 30, 2014 AquaBounty Stock Option Plan General and Administrative Expense	Jun. 30, 2013 AquaBounty Stock Option Plan General and Administrative Expense	Jun. 30, 2014 AquaBounty Stock Option Plan General and Administrative Expense	Jun. 30, 2013 AquaBounty Stock Option Plan General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation cost			$ 1,343	$ 147	$ 1,670	$ 299	$ 5,429	$ 641	$ 8,799	$ 896										$ 21	$ 42	$ 55	$ 21	$ 111	$ 1
Number of authorized awards												5,714,285	2,857,142		10,000,000	7,000,000
Options outstanding	8,622,579	2,840,648									2,200,779			6,421,800			7,359,000
Remaining shares available to grant														3,559,727
Unrecognized compensation costs related to nonvested awards	$ 74,570	$ 9,639
Recognized over weighted-average period	3 years	3 years
Option issued, vesting period																		1 year	3 years
Term of issuance of option																	10 years
Weighted average price of option	$ 22.82	$ 8.27															$ 0.31
Options exercisable																	6,255,520