Stock-based Compensation, Equity Grants, and Warrants - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015
Number of Shares
Outstanding at beginning of period (in shares)	2,324
Granted (in shares)	0
Exercised (in shares)	(100)
Outstanding at end of period (in shares)	2,224	2,324
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 1.40
Granted (in dollars per share)	0.00
Exercised (in dollars per share)	1.23
Outstanding at end of period (in dollars per share)	$ 1.40	$ 1.40
Share Based Compensation Arrangement by Share Based Payment, Award, Options Weighted Average Remaining Contractual Term [Abstract]
Outstanding	6 years 178 days	6 years 9 months 22 days
Share Based Compensation Arrangement by Share Based Payment, Award, Options Aggregate Intrinsic Value [Abstract]
Outstanding at the beginning of period (in dollars)	$ 3,649
Outstanding at the end of period (in dollars)	$ 6,512	$ 3,649