INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate reconciliation, provision (benefit) percent	(50.70%)	(38.00%)	(25.40%)	(27.20%)
Effective income tax rate reconciliation, change in enacted tax rate, amount	$ 1,334	$ 43	$ (2,929)	$ (2,548)
Effective income tax rate reconciliation, nondeductible provision (benefit) percent	37.70%	37.60%	38.10%	38.20%
Effective income tax rate reconciliation, excess tax benefit, amount		$ 2,193