Fair Value Measurements & Derivative Instruments - Assumptions Used in Valuing Derivative Liability (Detail)
|
12 Months Ended | |
---|---|---|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
Warrants [Member]
|
||
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ||
Risk free interest rate | 0.31% | 0.90% |
Expected life | 3 years 2 months 12 days | 4 years 2 months 12 days |
Dividend yield | ||
Volatility | 100.00% | 100.00% |
Exchange rights [Member]
|
||
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ||
Risk free interest rate | 0.62% | 1.30% |
Expected life | 5 years 3 months 18 days | 6 years 3 months 18 days |
Dividend yield | ||
Volatility | 100.00% | 100.00% |