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DERIVATIVES FINANCIAL INSTRUMENTS (Fair value of derivative instruments) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 30, 2017
Sep. 30, 2017
Derivatives, Fair Value [Line Items]    
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer 12 months  
Total derivative, Notional Amount $ 28,502 $ 36,404
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange forward contract, term of contract 12 months  
Total derivative, Notional Amount $ 28,502 36,404
Prepaid Expenses And Other Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset [1],[2] 796 1,353
Prepaid Expenses And Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset [1],[2] $ 796 $ 1,353
[1] Hedged amounts expected to be recognized to income within the next twelve months.
[2] The fair value of derivative assets is measured using level 2 fair value inputs and is included in prepaid expenses and other current assets on our Consolidated Condensed Balance Sheet.