Investments in Unconsolidated Affiliates - Summarized Financial Information Derived from Equity Method Investees' Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Dec. 28, 2019
Balance sheet data [Abstract]
Current assets	$ 195,030		$ 198,559
Noncurrent assets	94,650		87,218
Current liabilities	145,153		147,801
Noncurrent liabilities	55,644		$ 51,219
Income statement data [Abstract]
Net sales	106,998	$ 113,327
Gross profit	13,486	8,006
Net loss	$ (12,685)	$ (29,207)

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