INCOME TAXES - Effective Tax Rate Reconciliation (Details)	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Federal statutory rate	24.20%	34.00%
Decrease in valuation allowance	(880.00%)	(164.40%)
Deferred tax adjustment	(21.20%)	65.80%
Decrease in state deferred tax rate	(6.60%)	0.00%
State income taxes, net of federal benefit	0.40%	26.80%
Rate change due to Tax Reform	316.60%	0.00%
Stock-based compensation	7.30%	57.60%
Non-deductible expenses	0.60%	23.50%
Other	(3.20%)	0.00%
Income tax provision as percent of pretax income	(561.90%)	43.30%