Fair Value Accounting - Other Disclosure (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Oct. 01, 2009
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Number of warrants issued (in shares)	400,001	400,001	3
Expected dividend yield	0.00%	0.00%
Expected stock price volatility	51.71%	51.52%
Risk-free interest rate	0.30%	0.22%
Expected term (in years)	0 years 6 months 0 days	1 year 6 months 0 days
Total warrant valuation (in dollars)	$ 121,667	$ 155,000
Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Exercise Price	$ 6.76	$ 6.76
Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Exercise Price	$ 9.44	$ 9.44