INCOME TAXES (Schedule of Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ (6,898)	$ 6,058	$ (10,812)	$ 10,846
Income tax provision (benefit)	(3,683)	1,164	(6,469)	844
Net income (loss)	$ (3,215)	$ 4,894	$ (4,343)	$ 10,002
Effective tax rate	53.00%	19.00%	60.00%	8.00%