Convertible Promissory Notes - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	122 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended		3 Months Ended			1 Months Ended
	Jan. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013 July 2012 Notes	Mar. 31, 2013 Common Stock	Feb. 28, 2013 January 2013 Notes	Mar. 31, 2013 January 2013 Notes	Feb. 28, 2013 January 2013 Notes Common Stock	Mar. 31, 2013 Option and License Agreement	Mar. 31, 2013 Related Party	Mar. 31, 2013 Related Party Transactions	Mar. 31, 2013 Related Party Transactions July 2012 Notes	Feb. 28, 2013 Convertible debt	Jan. 23, 2013 Convertible debt	Feb. 28, 2013 Convertible debt Common Stock	Jan. 23, 2013 Convertible debt Related Party
Debt Instrument [Line Items]
Gross proceed from the issuance of a convertible note		$ 550,000	$ 13,288,184											$ 650,000		$ 100,000
Debt Instrument, Maturity Date														Jan. 23, 2014
Convertible debt instrument, effective interest rate														12.00%
Convertible debt, conversion price														$ 1.30
Minimum receipt of proceeds from sale of equity securities and/or as payments from partners to pay any remaining balance of note payable														7,500,000
Number of business days to pay remaining convertible debts														5 days
Debt instrument, beneficial conversion feature	141,829	141,829									21,820
Discount on warrant	195,969	195,969	6,170,341
Warrants issued	243,750	187,500	187,500
Gross proceeds from sales of common stock and warrants to purchase common stock		3,250,000
Option and License Agreement, upfront payment received									5,000,000
Principal and interest paid		567,368								100,000
Common shares issued, note conversion		365,263			365,263			77,034
Convertible notes, principal amount converted				(900,000)		100,000							900,000
Convertible notes, amortized debt discount		1,237,662	8,094,392				337,798
Common shares issued															288,229
Long term liabilities				$ 3,185,000								$ 630,000