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INTANGIBLE AND OTHER ASSETS (Amortization Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
INTANGIBLE AND OTHER ASSETS        
Amortization expense for intangible assets $ 1,700 $ 3,000 $ 3,400 $ 6,000
Estimated aggregate future amortization expense by fiscal year        
2019 (remaining) 3,421   3,421  
2020 6,327   6,327  
2021 2,499   2,499  
2022 1,635   1,635  
2023 59   59  
2024 $ 50   $ 50