Derivative Financial Instruments - Summary of Fair Values and Classification in Consolidated Balance Sheets of Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2015	Dec. 28, 2014	Mar. 30, 2014
Derivatives, Fair Value [Line Items]
Total	$ 643	$ 0	$ 781
Commodity Hedging Agreements Fair Market Value [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total	452	0	781
Commodity Hedging Agreements Fair Market Value [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total	$ 191	$ 0	$ 0