STOCKHOLDERS' EQUITY - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Sep. 30, 2018
Options
Beginning balance (in shares)	612,000
Forfeited (in shares)	(1,800)
Ending balance (in shares)	610,200	612,000
Vested and exercisable balance (in shares)	610,200
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share)	$ 6.23
Forfeited (in dollars per share)	5.00
Ending balance (in dollars per share)	6.19	$ 6.23
Vested and exercisable balance (in dollars per share)	6.19
Weighted Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share)	1.59
Forfeited (in dollars per share)	2.30
Ending balance (in dollars per share)	1.59	$ 1.59
Vested and exercisable balance (in dollars per share)	$ 1.59
Weighted Average Remaining Contractual term (years)
Balance outstanding	2 years 9 months 5 days	3 years 3 months 7 days
Vested and exercisable balance	2 years 9 months 5 days
Aggregate Intrinsic Value
Balance outstanding	$ 0	$ 0
Forfeited	0
Vested and exercisable balance	$ 0