| 
           Sales to Major Customers - Additional Information (Detail) 
         | 
        6 Months Ended | 
|---|---|
| 
           Jun. 29, 2013
 
          Customer 
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      |
| Segment Reporting [Abstract] | |
| Number of major customers | 1 | 
| X | ||||||||||
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- Definition 
          Number of major customers. No definition available. 
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| X | ||||||||||
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- Details 
          
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