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Geographic and Significant Customer Information - Summary of Different Geographic Regions (Parenthetical) (Detail)
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Dec. 28, 2012
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Sep. 28, 2012
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Dec. 30, 2011
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Percentage of geographic segment revenue threshold | 10.00% | 10.00% | |
| Percentage of geographic segment long-lived assets threshold | 10.00% | 10.00% | |
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Asia-Pacific region [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Percentage of geographic segment long-lived assets threshold | 15.00% | 15.00% |