Quarterly report pursuant to Section 13 or 15(d)

Derivative liability for Monte Carlo Simulations - 2015 Private Placement Financing (Detail)

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Derivative liability for Monte Carlo Simulations - 2015 Private Placement Financing (Detail) - $ / shares
9 Months Ended
Jun. 30, 2015
Sep. 30, 2014
Private Placement [Line Items]    
Closing price per share of Common Stock $ 0.001 $ 0.001
2015 Private Placement Financing | Derivative Liabilities Assumptions    
Private Placement [Line Items]    
Closing price per share of Common Stock 0.26  
Exercise price per share $ 0.25  
Expected volatility 85.00%  
Risk-free interest rate 1.63%  
Dividend yield 0.00%  
Remaining expected term of underlying securities (years) 5 years