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INTANGIBLE AND OTHER ASSETS (Amortization Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jul. 02, 2016
Jul. 01, 2017
Jul. 02, 2016
INTANGIBLE AND OTHER ASSETS        
Amortization expense for intangible assets $ 3,700 $ 3,800 $ 7,400 $ 7,500
Estimated aggregate future amortization expense by fiscal year        
2017 (remaining) 6,049   6,049  
2018 11,828   11,828  
2019 11,499   11,499  
2020 10,975   10,975  
2021 7,146   7,146  
2022 $ 6,251   $ 6,251