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Stockholders' Equity - Narrative (Detail) (USD $)
9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Stockholders Equity [Line Items]    
Shares of common stock purchased under share repurchase plan, shares 1,073,863 3,924,910
Shares of common stock purchased under share repurchase plan, value $ 39,697,000 $ 146,373,000