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Geographic and Significant Customer Information - Summary of Customer Concentrations as Percentage of Total Sales and Accounts Receivable (Detail)
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3 Months Ended | ||
|---|---|---|---|
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Dec. 28, 2012
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Dec. 30, 2011
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Sep. 28, 2012
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| Revenue from External Customer [Line Items] | |||
| Revenue | 62.00% | 54.00% | |
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Customer A [Member]
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| Revenue from External Customer [Line Items] | |||
| Revenue | 16.00% | 21.00% | |
| Accounts Receivable | 19.00% | 16.00% | |
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Customer B [Member]
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| Revenue from External Customer [Line Items] | |||
| Revenue | 26.00% | 13.00% | |
| Accounts Receivable | 18.00% | 18.00% | |