Financial Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Conversion Options | 8% convertible promissory notes
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability	$ 720,000
Warrant | 8% convertible promissory notes
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability	300,000
Fair Value, Inputs, Level 3 | Conversion Options | 8% convertible promissory notes
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability	720,000
Fair Value, Inputs, Level 3 | Warrant | 8% convertible promissory notes
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability	300,000
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	1,105,594	2,546,632
Fair Value, Measurements, Recurring | Conversion Options
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		113,271
Fair Value, Measurements, Recurring | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		1,875,463
Fair Value, Measurements, Recurring | Bonus Warrants
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		70,343
Fair Value, Measurements, Recurring | Placement Agent | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	85,594	487,555
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	1,105,594	2,546,632
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Conversion Options
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		113,271
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		1,875,463
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Bonus Warrants
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		70,343
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Placement Agent | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	$ 85,594	$ 487,555