Derivative Financial Instruments - Summary of Pre-Tax Changes in Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ 643	$ 781
Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total	213	781
Selling, Delivery and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total	$ 430	$ 0