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Stockholders' Equity (Detail)
9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Stock Options [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 729,000  
Contingently Issuable Shares [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,800,000 1,400,000