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Equity Incentive Plan And Stock-Based Compensation (Schedule Of Activities And Related Information For Options) (Parenthetical) (Detail) (USD $)
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3 Months Ended | 6 Months Ended |
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Jul. 01, 2012
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Jul. 01, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Income tax benefits related to stock-based compensation | $ 0 | $ 0 |