Related Party Transactions - Summarizes Purchases and Sales Arrangements between the Company and CCR (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Related Party Transaction [Line Items]
Purchases from	$ 75,881	$ 68,128	$ 143,126	$ 125,098
CCR [Member] | Production Agreement [Member]
Related Party Transaction [Line Items]
Purchases from		49,937		90,294
Gross sales to		$ 33,894		$ 61,057