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Intangible Assets Intangible Assets - Future Amortization Expense (Details) - USD ($)
$ in Thousands
Sep. 28, 2019
Dec. 29, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
2019 (balance of year) $ 4,417  
2020 4,015  
2021 3,572  
2022 2,308  
2023 1,838  
Thereafter 11,282  
Intangible assets, net $ 27,432 $ 27,924