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SHARE-BASED COMPENSATION - Fair value of each stock option (Details 1)	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)		5 years
Expected dividend yield	0.00%	0.00%
Estimated Annual Forfeiture rate	13.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	5 years
Risk-free interest rate	0.83%	2.20%
Expected volatility	69.00%	69.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	3 years
Risk-free interest rate	0.04%	0.30%
Expected volatility	63.00%	66.00%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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