Investment in Unconsolidated Affiliates - Summarized Financial Information Derived from Equity Method Investees' Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Balance sheet data [Abstract]
Current assets	$ 251,188		$ 251,188		$ 244,323
Noncurrent assets	132,000		132,000		130,400
Current liabilities	177,110		177,110		148,806
Noncurrent liabilities	59,334		59,334		$ 71,681
Income statement data [Abstract]
Net sales	148,400	$ 146,700	407,300	$ 437,200
Gross profit	21,500	22,200	56,700	59,700
Net (loss) income	$ (788)	$ 2,244	$ (3,492)	$ 6,097