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Derivative and Warrant Liabilities (Detail) (USD $)
6 Months Ended
Jun. 30, 2013
Derivative Liability
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Expected term 6 months
Expected dividends 0.00%
Forteitures 0.00%
Derivative Liability | Maximum
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Exercise Price $ 0.099
Expected Volatility 201.00%
Risk-free interest rate 0.14%
Derivative Liability | Minimum
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Exercise Price $ 0.0573
Expected Volatility 191.00%
Risk-free interest rate 0.10%
Warrant Liability
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Expected term 5 years
Expected dividends 0.00%
Forteitures 0.00%
Warrant Liability | Maximum
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Exercise Price $ 0.1287
Expected Volatility 176.00%
Risk-free interest rate 1.41%
Warrant Liability | Minimum
 
Derivative and Warrant Liabilities Disclosure [Line Items]  
Exercise Price $ 0.075
Expected Volatility 173.00%
Risk-free interest rate 0.77%