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Effect of Derivative Instruments on Consolidated Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2013 | Sep. 28, 2012 | Sep. 27, 2013 | Sep. 28, 2012
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Operating expenses | $ (34,522) | $ (25,052) | $ (96,701) | $ (67,997)
Commodity | Derivatives not designated as hedging instruments |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Operating expenses |  |  |  | $ (17)

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- Details
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. + References No definition available. + Details
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