Derivative Financial Instruments - Summary of Pre-Tax Changes in Fair Value (Detail) - Commodity Contract [Member] - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	$ (2,967)	$ 327
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	(2,765)	698
Selling, Delivery and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	$ (202)	$ (371)