Summary of Changes in Convertible Debt Third Parties Net of Unamortized Discount (Detail) (USD $)	12 Months Ended		131 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Sep. 24, 2013
Debt Instrument [Line Items]
Balance at December 31, 2012	$ 318,658
Discount on convertible debt		(3,708,237)		(2,432,681)
Repayment of January 23, 2013 Notes	(450,000)		(761,222)
Unamortized discount closed to loss on debt extinguishment	1,949,003
Amortization of debt discount to interest expense through December 31, 2013	(1,613,354)	(104,032)	(8,470,084)
Balance at December 31, 2013		318,658
Warrants Attached to Debt
Debt Instrument [Line Items]
Discount on convertible debt	(165,820)		(165,820)
Convertible debt
Debt Instrument [Line Items]
Amortization of debt discount to interest expense through December 31, 2013	1,473,168
January 2013 Notes
Debt Instrument [Line Items]
Notes, face value	550,000
Repayment of January 23, 2013 Notes	(450,000)
Principal amount of Notes converted to common stock	(100,000)
January 2013 Notes | Beneficial Conversion Feature
Debt Instrument [Line Items]
Discount on convertible debt	(120,009)		(120,009)
July 2012 Notes | Debt Conversion One
Debt Instrument [Line Items]
Principal amount of Notes converted to common stock	(900,000)
July 2012 Notes | Debt Conversion Two
Debt Instrument [Line Items]
Principal amount of Notes converted to common stock	$ (2,555,000)