Derivative Financial Instruments - Summary of Fair Values and Classification in Consolidated Balance Sheets of Derivative Instruments (Detail) - USD ($) $ in Thousands	Sep. 27, 2015	Dec. 28, 2014	Sep. 28, 2014
Assets:
Total assets	$ 39	$ 0	$ 552
Liabilities:
Total liabilities	2,275	0	0
Commodity Hedging Agreements Fair Market Value [Member] | Prepaid Expenses and Other Current Assets [Member]
Assets:
Total assets	0	0	552
Commodity Hedging Agreements Fair Market Value [Member] | Other Assets [Member]
Assets:
Total assets	39	0	0
Commodity Hedging Agreements Fair Market Value [Member] | Other Accrued Liabilities [Member]
Liabilities:
Total liabilities	1,918	0	0
Commodity Hedging Agreements Fair Market Value [Member] | Other Liabilities [Member]
Liabilities:
Total liabilities	$ 357	$ 0	$ 0