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Intangible and Other Assets (Amortization Expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
INTANGIBLE AND OTHER ASSETS      
Amortization expense for intangible assets $ 11,900 $ 13,500 $ 15,000
Estimated aggregate future amortization expense by fiscal year      
2019 11,455    
2020 10,933    
2021 7,104    
2022 6,247    
2023 $ 65