Fair Value Accounting (Tables)

12 Months Ended

Sep. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring

The following table lists our financial assets and liabilities that are measured at fair value on a recurring basis:

Fair Value Measurement
(in thousands)	Level 1		Level 2	Level 3
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Remaining Inputs	Significant Unobservable Inputs	Total
As of September 30, 2014
Assets:
Cash and cash equivalents	$	20,687	—	—	$	20,687
Restricted cash	1,482		—	—	1,482
Liabilities:
Warrant liability	—		122	—	122
As of September 30, 2013
Assets:
Cash and cash equivalents	$	16,104	—	—	$	16,104
Restricted cash	815		—	—	815
Liabilities:
Warrant liability	—		155	—	155

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques

Assumptions used in Monte Carlo Option Valuation Model	Warrants issued on October 1, 2009
	As of September 30, 2014		As of September 30, 2013
Number of warrants issued	400,001		400,001
Expiration date	4/1/2015		4/1/2015
Exercise price	$6.76 - $9.44		$6.76 - $9.44
Expected dividend yield	—		—
Expected stock price volatility	51.71	%	51.52	%
Risk-free interest rate	0.30	%	0.22	%
Expected term (in years)	0.5		1.5
Total warrant valuation	$121,667		$155,000