Summary of Changes in Convertible Debt Related Parties Net of Unamortized Discount (Detail) (USD $)	9 Months Ended		128 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2013 Warrants Attached to Debt	Sep. 30, 2013 Related Party Transactions	Dec. 31, 2012 Related Party Transactions	Sep. 30, 2013 Convertible debt Related Party Transactions	Sep. 30, 2013 Convertible debt Related Party Transactions July 2012 Notes	Sep. 30, 2013 Convertible debt Related Party Transactions Beneficial Conversion Feature	Sep. 30, 2013 Convertible debt Related Party Transactions Warrants Attached to Debt
Debt Instrument [Line Items]
Balance at December 31, 2012	$ 318,658						$ 58,105
Notes, face value							100,000
Discount on convertible debt				(165,820)	0	(571,895)			(21,820)	(30,149)
Repayment of January 23, 2013 Notes	(450,000)		(761,222)				(100,000)
Principal amount of Notes converted to common stock								(630,000)
Unamortized debt discount closed to loss on debt extinguishment	1,949,003						483,678
Amortization of debt discount to interest expense through September 30, 2013	$ (1,613,354)	$ (34,600)	$ (8,470,084)				$ 140,186