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Derivative Instruments Located on Consolidated Balance Sheet (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2013
Dec. 29, 2012
Derivatives, Fair Value [Line Items]    
Derivative Assets $ 162 $ 9
Derivative Liabilities 11,720 4,060
Interest Rate Contracts | Other Current Liabilities
    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities   867
Commodity Contract | Other Current Liabilities
    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities 10,625 3,047
Commodity Contract | Other LongTerm Liabilities
    
Derivatives, Fair Value [Line Items]    
Derivative Liabilities 1,095 146
Commodity Contract | Other Current Assets
    
Derivatives, Fair Value [Line Items]    
Derivative Assets 162  
Commodity Contract | Other Long Term Assets
    
Derivatives, Fair Value [Line Items]    
Derivative Assets   $ 9