Derivative Financial Instruments - Summary of Pre-Tax Changes in Fair Value (Detail) - Commodity Contract [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	$ 6,620	$ (2,967)
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	3,905	(2,765)
Selling, Delivery and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	$ 2,715	$ (202)