Financial Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	$ 140,458	$ 2,546,632
Conversion Options
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		113,271
Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		1,875,463
Bonus Warrants
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of derivative liability		70,343
Placement Agent | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	140,458	487,555
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	140,458	2,546,632
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, 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, 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, Inputs, Level 3 | Placement Agent | Warrant
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value of financial liabilities	$ 140,458	$ 487,555