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Selected Balance Sheet Information (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Other Current Assets [Line Items]    
Intrexon prepaid research and development expenses $ 1,133 $ 1,361
Prepaid insurance 114 177
Prepaid credit cards 90 0
Prepaid expenses 52 53
Total $ 1,389 $ 1,591