FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative contracts, net	$ (1,794)	$ 1,522
Designated as Hedging Instrument [Member] | Prepaid expenses, deferred costs and other current assets [Member] | Foreign Currency Forwards [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	3,822
Designated as Hedging Instrument [Member] | Accrued liabilities [Member] | Interest Rate Swap [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	(1,312)	(1,326)
Designated as Hedging Instrument [Member] | Other long-term liabilities [Member] | Interest Rate Swap [Member]
Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	$ (482)	$ (974)