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Commitments and Contingencies - Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]      
Expenses from operating leases $ 5,575 $ 4,955 $ 4,298
2019 4,507    
2020 3,275    
2021 2,230    
2022 1,579    
2023 987    
Due Thereafter 1,713    
Future Minimum Payments Due $ 14,291