INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Effective income tax rate reconciliation [Abstract]
Provision for income taxes (in hundredths)	29.00%	24.10%	20.30%	25.90%
Foreign income tax adjustment	$ 1,313
Income (loss) from continuing operations before income taxes [Abstract]
Total	13,927	$ 17,525	$ 54,725	$ 46,854
Foreign [Abstract]
Total U.S. and foreign	$ 4,041	$ 4,223	$ 11,112	12,149
Carryforwards [Line Items]
Tax holiday rate percentage (in hundredths)	0.00%		0.00%
Percentage of local statutory rate in effect for 2016 and 2017 (in hundredths)	50.00%		50.00%
Approximate tax provision reduction as a result in the tax holiday			$ 4,047	$ 2,857
Reduction in income tax expense for retroactive reinstatement of research tax credit			$ 1,124