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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Sep. 29, 2018
Sep. 30, 2017
Oct. 01, 2016
Goodwill [Line Items]          
Impairment charges     $ 0 $ 35,207 $ 0
Assembléon [Member]          
Goodwill [Line Items]          
Fair Value Inputs, Long-term Revenue Growth Rate   2.50%      
Fair Value Inputs, Discount Rate   10.45%      
Impairment charges $ 35,200