Derivative Instruments Located on Condensed Consolidated Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 04, 2014	Dec. 28, 2013
Derivatives, Fair Value [Line Items]
Derivative Assets		$ 162
Derivative Liabilities	27,056	11,720
Commodity Contract | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	22,380	10,625
Commodity Contract | Other LongTerm Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	4,676	1,095
Commodity Contract | Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets		$ 162