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Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 28, 2020
Dec. 28, 2019
Revenue from Contract with Customer [Abstract]    
Trade receivables $ 235,617 $ 278,124
Contract assets (current) 872 857
Contract assets (long-term) 2,521 2,700
Contract liabilities $ 38,028 $ 54,972