Equity Transactions - Stock Appreciation Rights Activity (Details) - Stock appreciation rights - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
SARs
Outstanding as of September 30, 2018 (in shares)	934,205
Granted (in shares)	95,000
Exercised (in shares)	(181,009)
Forfeited (in shares)	(414,614)
Outstanding as of September 30, 2019 (in shares)	433,582	934,205
Vested and expected to vest as of September 30, 2019 (in shares)	379,179
Exercisable as of September 30, 2019 (in shares)	143,375
Weighted- Average Exercise Price
Outstanding as of September 30, 2018 (in dollars per share)	$ 7.23
Granted (in dollars per share)	6.11
Exercised (in dollars per share)	4.57
Forfeited (in dollars per share)	8.90
Outstanding as of September 30, 2019 (in dollars per share)	6.49	$ 7.23
Vested and expected to vest as of September 30, 2019 (in dollars per share)	5.95
Exercisable as of September 30, 2019 (in dollars per share)	$ 5.83
Weighted- Average Remaining Contractual Term (years)
Outstanding, weighted-average remaining contractual term	11 months 4 days	9 months 10 days
Vested and expected to vest as of September 30, 2019, weighted-average remaining contractual term	11 months 1 day
Exercisable as of September 30, 2019, weighted average remaining contractual term	2 months 23 days
Aggregate Intrinsic Value
Outstanding as of September 30, 2018, aggregate intrinsic value	$ 789
Granted, aggregate intrinsic value	0
Exercised, aggregate intrinsic value	491
Forfeited, aggregate intrinsic value	74
Outstanding as of September 30, 2019, aggregate intrinsic value	748	$ 789
Vested and expected to vest as of September 30, 2019, aggregate intrinsic value	748
Exercisable as of September 30, 2019, aggregate intrinsic value	$ 316