Equity (Schedule of Valuation Assumptions) (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Black-Scholes weighted average assumptions:
Expected dividend rate	0.00%	0.00%	0.00%	0.00%
Expected stock price volatility rate	92.00%	96.70%	93.20%	96.80%
Risk-free interest rate	1.90%	1.30%	1.90%	1.10%
Expected term (in years)	6 years	6 years	6 years	6 years
Weighted average grant date fair value per share of stock option granted (in dollars per share)	$ 3.21	$ 2.98	$ 3.61	$ 3.45