Equity (Schedule of Valuation Assumptions) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Black-Scholes weighted average assumptions:
Expected dividend rate	0.00%	0.00%	0.00%	0.00%
Expected stock price volatility rate	63.50%	92.00%	70.50%	93.20%
Risk-free interest rate	1.90%	1.90%	1.80%	1.90%
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)	$ 3.59	$ 3.21	$ 3.57	$ 3.61