Selected Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Current Assets [Line Items]
Intrexon prepaid research and development expenses	$ 1,073	$ 1,361
Prepaid insurance	51	177
Prepaid credit cards	65	0
Prepaid expenses	193	53
Total	$ 1,382	$ 1,591