Equity - Schedule of Valuation Assumptions (Details) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Black-Scholes weighted average assumptions:
Expected dividend rate	0.00%	0.00%	0.00%
Expected stock price volatility rate	92.80%	96.70%	101.80%
Risk-free interest rate	1.90%	1.20%	0.80%
Expected term (in years)	6 years	6 years	5 years 4 months 24 days
Weighted average grant date fair value per share of stock option granted (in dollars per share)	$ 3.53	$ 3.45	$ 3.54