Investment in Unconsolidated Affiliates - Summarized Financial Information Derived from Equity Method Investees' Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Balance sheet data [Abstract]
Current assets	$ 247,006		$ 247,006		$ 244,323
Noncurrent assets	132,800		132,800		130,400
Current liabilities	168,610		168,610		148,806
Noncurrent liabilities	61,364		61,364		$ 71,681
Income statement data [Abstract]
Net sales	132,600	$ 138,900	258,900	$ 290,500
Gross profit	19,600	19,500	35,200	37,500
Net (loss) income	$ (217)	$ (1,990)	$ (2,704)	$ 3,854