Assumptions Used For Derivative Liability (Detail) - $ / shares |
1 Months Ended | ||||
|---|---|---|---|---|---|
Mar. 15, 2015 |
Dec. 01, 2014 |
Jun. 30, 2015 |
Jun. 22, 2015 |
Sep. 30, 2014 |
|
| Closing price per share of Common Stock | $ 0.001 | $ 0.001 | |||
| Derivative liabilities Assumptions | Private Placement Financing | |||||
| Closing price per share of Common Stock | $ 0.21 | $ 0.25 | 0.26 | $ 0.23 | $ 0.18 |
| Exercise price per share | $ 0.20 | $ 0.20 | |||
| Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
| Maximum | Derivative liabilities Assumptions | Private Placement Financing | |||||
| Exercise price per share | $ 0.30 | $ 0.30 | $ 0.40 | ||
| Expected volatility | 110.00% | 90.00% | 85.00% | 85.00% | 90.00% |
| Risk-free interest rate | 1.41% | 1.39% | 1.63% | 1.68% | 1.55% |
| Remaining expected term of underlying securities (years) | 4 years 3 months 18 days | 4 years 7 months 6 days | 4 years 4 days | 4 years 11 days | 4 years 3 months 29 days |
| Minimum | Derivative liabilities Assumptions | Private Placement Financing | |||||
| Exercise price per share | $ 0.20 | $ 0.20 | $ 0.30 | ||
| Expected volatility | 80.00% | 80.00% | 75.00% | 55.00% | 85.00% |
| Risk-free interest rate | 0.03% | 0.01% | 0.28% | 0.27% | 0.02% |
| Remaining expected term of underlying securities (years) | 2 months 19 days | 3 months 29 days | 1 year 4 days | 1 year 11 days | 3 months 29 days |