Summary of Changes in Convertible Debt Related Parties Net of Unamortized Discount (Detail) (USD $)	12 Months Ended	119 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012 Related Party Transactions	Dec. 31, 2011 Related Party Transactions	Dec. 31, 2012 Beneficial Conversion Feature	Dec. 31, 2012 Warrants Attached to Debt	Dec. 31, 2012 Convertible debt Related Party Transactions	Dec. 31, 2012 Convertible debt Beneficial Conversion Feature Related Party Transactions	Dec. 31, 2012 Convertible debt Warrants Attached to Debt Related Party Transactions
Debt Instrument [Line Items]
July 25, 2012 Notes, face value	$ 3,455,000						$ 630,000
Discount on convertible debt	(3,708,237)	(3,708,237)	(571,895)	0	(1,266,665)	(1,957,665)		(230,970)	(356,969)
Amortization of debt discount to interest expense through December 31, 2012	(104,032)	(6,856,730)					16,044
Balance at December 31, 2012	$ 318,658	$ 318,658					$ 58,105