Organization and Business - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended	77 Months Ended
	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013	Dec. 31, 2012	May 09, 2007
Organization and Nature of Operations [Line Items]
Percentage of Charge					50.00%
Impairment of License			$ 0	$ 345,000	$ 345,000	$ 690,000
Cash		4,100,841	4,100,841	332,862	952,252	4,100,841	534,046	0
Carrying value of the siRNA license	345,000
Placement agent commission		$ 2,800,000
Phase I clinical trial
Organization and Nature of Operations [Line Items]
Number patients benefited from Liposomal Grb-2 treatment		3	3			3