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Derivative Financial Instruments - Summary of Pre-Tax Changes in Fair Value (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 28, 2015
Jun. 29, 2014
Jun. 28, 2015
Jun. 29, 2014
Derivative Instruments, Gain (Loss) [Line Items]        
Total $ (749) $ 91 $ (106) $ 871
Cost of Sales [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Total (893) 91 (681) 871
Selling, Delivery and Administrative Expenses [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Total $ 144 $ 0 $ 575 $ 0