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Shareholder's Equity (Key Assumptions Use In Option Value Calculations) (Details)
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12 Months Ended | ||
|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2010
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| Shareholders' Equity [Abstract] | |||
| Expected life | 5 years | 5 years | |
| Expected volatility, Minimum | 66.26% | ||
| Expected volatility, Maximum | 67.32% | ||
| Expected volatility | 75.33% | ||
| Weighted-average volatility | 66.56% | 75.33% | |
| Risk free interest rate, minimum | 1.49% | ||
| Risk free interest rate, maximum | 2.38% | ||
| Risk free interest rate | 1.28% | ||
| Dividend yield | 0.00% | 0.00% | 0.00% |