Stock-based Compensation, Equity Grants, and Warrants - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Number of Shares
Outstanding at beginning of period (in shares)	2,380	1,613
Granted (in shares)		830
Cancelled (in shares)	(56)	(63)
Outstanding at end of period (in shares)	2,324	2,380	1,613
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 1.40	$ 1.15
Granted (in dollars per share)		1.52
Cancelled (in dollars per share)	1.40	1.40
Outstanding at end of period (in dollars per share)	$ 1.40	$ 1.40	$ 1.15
Share Based Compensation Arrangement by Share Based Payment, Award, Options Weighted Average Remaining Contractual Term [Abstract]
Outstanding	6 years 9 months 22 days	7 years 9 months 22 days	7 years 10 months 24 days
Share Based Compensation Arrangement by Share Based Payment, Award, Options Aggregate Intrinsic Value [Abstract]
Outstanding at the beginning of period (in dollars)	$ 1,589	$ 388
Outstanding at the end of period (in dollars)	$ 3,649	$ 1,589	$ 388