Fair Value Accounting (Assumptions used in Monte Carlo Option Valuation Model) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Equity Facility, 2008
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]
Number of warrants issued	0	350,010
Exercise price	$ 0.00	$ 60.24
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	0.00%	54.82%
Risk-free interest rate	0.00%	0.14%
Expected term (in years)	0 years	4 months 21 days
Total warrant valuation	$ 0	$ 0
Equity Facility, 2009
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]
Number of warrants issued	400,001	400,001
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	51.52%	81.56%
Risk-free interest rate	0.22%	0.27%
Expected term (in years)	1 year 6 months 0 days	2 years 6 months
Total warrant valuation	$ 155,000	$ 670,000
Equity Facility, 2009 | Maximum
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]
Exercise price	$ 9.44	$ 9.44
Equity Facility, 2009 | Minimum
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]
Exercise price	$ 6.76	$ 6.76