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INTANGIBLE AND OTHER ASSETS (Amortization Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
INTANGIBLE AND OTHER ASSETS        
Amortization expense for intangible assets $ 3,000 $ 3,700 $ 10,400 $ 11,200
Estimated aggregate future amortization expense by fiscal year        
2017 (remaining) 3,028   3,028  
2018 11,848   11,848  
2019 11,518   11,518  
2020 10,979   10,979  
2021 7,143   7,143  
2022 $ 6,263   $ 6,263